<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://mcry.com/20130630" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:mrcy="http://mcry.com/20130630" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-roles-2012-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-types-2012-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2012-01-31" schemaLocation="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2012-01-31" schemaLocation="http://xbrl.sec.gov/currency/2012/currency-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2012-01-31" schemaLocation="http://xbrl.sec.gov/exch/2012/exch-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2012-01-31" schemaLocation="http://xbrl.sec.gov/invest/2012/invest-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mrcy-20130630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mrcy-20130630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mrcy-20130630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="mrcy-20130630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AcquiredIntangibleAssets" roleURI="http://mcry.com/role/AcquiredIntangibleAssets">
        <link:definition>2119100 - Disclosure - Acquired Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquiredIntangibleAssetsDetail" roleURI="http://mcry.com/role/AcquiredIntangibleAssetsDetail">
        <link:definition>2419402 - Disclosure - Acquired Intangible Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquiredIntangibleAssetsTables" roleURI="http://mcry.com/role/AcquiredIntangibleAssetsTables">
        <link:definition>2319301 - Disclosure - Acquired Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Acquisitions" roleURI="http://mcry.com/role/Acquisitions">
        <link:definition>2102100 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsAdditionalInformationDetail" roleURI="http://mcry.com/role/AcquisitionsAdditionalInformationDetail">
        <link:definition>2402402 - Disclosure - Acquisitions - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsNetPurchasePriceAndPreliminaryAllocationForAcquisitionDetail" roleURI="http://mcry.com/role/AcquisitionsNetPurchasePriceAndPreliminaryAllocationForAcquisitionDetail">
        <link:definition>2402403 - Disclosure - Acquisitions  - Net Purchase Price and Preliminary Allocation for Acquisition (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsNetPurchasePriceAndPreliminaryAllocationForAcquisitionDetailCalc2" roleURI="http://mcry.com/role/AcquisitionsNetPurchasePriceAndPreliminaryAllocationForAcquisitionDetailCalc2">
        <link:definition>2402403 - Disclosure - Acquisitions  - Net Purchase Price and Preliminary Allocation for Acquisition (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsSupplementalStatementsOfOperationsInformationDetail" roleURI="http://mcry.com/role/AcquisitionsSupplementalStatementsOfOperationsInformationDetail">
        <link:definition>2402404 - Disclosure - Acquisitions  - Supplemental Statements of Operations Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTables" roleURI="http://mcry.com/role/AcquisitionsTables">
        <link:definition>2302301 - Disclosure - Acquisitions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://mcry.com/role/CommitmentsAndContingencies">
        <link:definition>2126100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesAdditionalInformationDetail" roleURI="http://mcry.com/role/CommitmentsAndContingenciesAdditionalInformationDetail">
        <link:definition>2426402 - Disclosure - Commitments And Contingencies - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesTables" roleURI="http://mcry.com/role/CommitmentsAndContingenciesTables">
        <link:definition>2326301 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ComponentsOfIncomeBeforeIncomeTaxesAndIncomeTaxExpenseBenefitDetail" roleURI="http://mcry.com/role/ComponentsOfIncomeBeforeIncomeTaxesAndIncomeTaxExpenseBenefitDetail">
        <link:definition>2424402 - Disclosure - Components of Income Before Income Taxes and Income Tax Expense (Benefit) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ComponentsOfNetDeferredTaxAssetsLiabilitiesDetail" roleURI="http://mcry.com/role/ComponentsOfNetDeferredTaxAssetsLiabilitiesDetail">
        <link:definition>2424404 - Disclosure - Components of Net Deferred Tax Assets (Liabilities) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://mcry.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://mcry.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://mcry.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements Of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperationsAndComprehensiveIncomeLoss" roleURI="http://mcry.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveIncomeLoss">
        <link:definition>1002000 - Statement - Consolidated Statements Of Operations And Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfShareholdersEquity" roleURI="http://mcry.com/role/ConsolidatedStatementsOfShareholdersEquity">
        <link:definition>1003000 - Statement - Consolidated Statements Of Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://mcry.com/role/Debt">
        <link:definition>2127100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtAdditionalInformationDetail" roleURI="http://mcry.com/role/DebtAdditionalInformationDetail">
        <link:definition>2427401 - Disclosure - Debt - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusiness" roleURI="http://mcry.com/role/DescriptionOfBusiness">
        <link:definition>2101100 - Disclosure - Description of Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusinessDetails" roleURI="http://mcry.com/role/DescriptionOfBusinessDetails">
        <link:definition>2401401 - Disclosure - Description of Business - (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://mcry.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlans" roleURI="http://mcry.com/role/EmployeeBenefitPlans">
        <link:definition>2138100 - Disclosure - Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansAdditionalInformationDetail" roleURI="http://mcry.com/role/EmployeeBenefitPlansAdditionalInformationDetail">
        <link:definition>2438401 - Disclosure - Employee Benefit Plans - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EstimatedFutureAmortizationExpenseForAcquiredIntangibleAssetsDetail" roleURI="http://mcry.com/role/EstimatedFutureAmortizationExpenseForAcquiredIntangibleAssetsDetail">
        <link:definition>2419403 - Disclosure - Estimated Future Amortization Expense for Acquired Intangible Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ExpensesByBusinessSegmentForRestructuringPlansDetail" roleURI="http://mcry.com/role/ExpensesByBusinessSegmentForRestructuringPlansDetail">
        <link:definition>2423403 - Disclosure - Expenses by Business Segment for Restructuring Plans (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfAcquiredAssetsDetail" roleURI="http://mcry.com/role/FairValueOfAcquiredAssetsDetail">
        <link:definition>2419404 - Disclosure - Fair Value of Acquired Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstruments" roleURI="http://mcry.com/role/FairValueOfFinancialInstruments">
        <link:definition>2105100 - Disclosure - Fair Value of Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstrumentsAdditionalInformationDetail" roleURI="http://mcry.com/role/FairValueOfFinancialInstrumentsAdditionalInformationDetail">
        <link:definition>2405402 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstrumentsTables" roleURI="http://mcry.com/role/FairValueOfFinancialInstrumentsTables">
        <link:definition>2305301 - Disclosure - Fair Value of Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Goodwill" roleURI="http://mcry.com/role/Goodwill">
        <link:definition>2117100 - Disclosure - Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAdditionalInformationDetail" roleURI="http://mcry.com/role/GoodwillAdditionalInformationDetail">
        <link:definition>2417403 - Disclosure - Goodwill - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillChangesInCarryingAmountOfGoodwillDetail" roleURI="http://mcry.com/role/GoodwillChangesInCarryingAmountOfGoodwillDetail">
        <link:definition>2417402 - Disclosure - Goodwill - Changes in Carrying Amount of Goodwill (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillTables" roleURI="http://mcry.com/role/GoodwillTables">
        <link:definition>2317301 - Disclosure - Goodwill  (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://mcry.com/role/IncomeTaxes">
        <link:definition>2124100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesAdditionalInformationDetail" roleURI="http://mcry.com/role/IncomeTaxesAdditionalInformationDetail">
        <link:definition>2424405 - Disclosure - Income Taxes - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://mcry.com/role/IncomeTaxesTables">
        <link:definition>2324301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventory" roleURI="http://mcry.com/role/Inventory">
        <link:definition>2110100 - Disclosure - Inventory</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryAdditionalInformationDetails" roleURI="http://mcry.com/role/InventoryAdditionalInformationDetails">
        <link:definition>2410403 - Disclosure - Inventory - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryDetail" roleURI="http://mcry.com/role/InventoryDetail">
        <link:definition>2410402 - Disclosure - Inventory (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryTables" roleURI="http://mcry.com/role/InventoryTables">
        <link:definition>2310301 - Disclosure - Inventory (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MinimumLeasePaymentsUnderNonCancelableOperatingLeasesDetail" roleURI="http://mcry.com/role/MinimumLeasePaymentsUnderNonCancelableOperatingLeasesDetail">
        <link:definition>2426403 - Disclosure - Minimum Lease Payments under Non Cancelable Operating Leases (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomers" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomers">
        <link:definition>2145100 - Disclosure - Operating Segment, Geographic Information and Significant Customers</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersAdditionalInformationDetail" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersAdditionalInformationDetail">
        <link:definition>2445406 - Disclosure - Operating Segment, Geographic Information and Significant Customers - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersCustomersComprisingTenPercentOrMoreRevenuesDetail" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersCustomersComprisingTenPercentOrMoreRevenuesDetail">
        <link:definition>2445405 - Disclosure - Operating Segment, Geographic Information and Significant Customers - Customers Comprising Ten Percent or more Revenues (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersGeographicDistributionOfRevenuesAndLongLivedAssetsFromContinuingOperationsDetail" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersGeographicDistributionOfRevenuesAndLongLivedAssetsFromContinuingOperationsDetail">
        <link:definition>2445404 - Disclosure - Operating Segment, Geographic Information and Significant Customers - Geographic Distribution of Revenues and Long Lived Assets from Continuing Operations (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersReconcilesNetIncomeMostDirectlyComparableGaapFinancialMeasureToAdjustedEbitdaDetail" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersReconcilesNetIncomeMostDirectlyComparableGaapFinancialMeasureToAdjustedEbitdaDetail">
        <link:definition>2445403 - Disclosure - Operating Segment, Geographic Information and Significant Customers - Reconciles Net Income, Most Directly Comparable GAAP Financial Measure to Adjusted EBITDA (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersSummaryOfPerformanceOfOperationsByReportableSegmentDetail" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersSummaryOfPerformanceOfOperationsByReportableSegmentDetail">
        <link:definition>2445402 - Disclosure - Operating Segment, Geographic Information and Significant Customers - Summary of Performance of Operations by Reportable Segment (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentGeographicInformationAndSignificantCustomersTables" roleURI="http://mcry.com/role/OperatingSegmentGeographicInformationAndSignificantCustomersTables">
        <link:definition>2345301 - Disclosure - Operating Segment, Geographic Information and Significant Customers (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipment" roleURI="http://mcry.com/role/PropertyAndEquipment">
        <link:definition>2113100 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentAdditionalInformationDetail" roleURI="http://mcry.com/role/PropertyAndEquipmentAdditionalInformationDetail">
        <link:definition>2413403 - Disclosure - Property and Equipment - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentDetail" roleURI="http://mcry.com/role/PropertyAndEquipmentDetail">
        <link:definition>2413402 - Disclosure - Property and Equipment (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentTables" roleURI="http://mcry.com/role/PropertyAndEquipmentTables">
        <link:definition>2313301 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ReconciliationBetweenStatutoryFederalIncomeTaxRateAndEffectiveIncomeTaxRateFromContinuingOperationsDetail" roleURI="http://mcry.com/role/ReconciliationBetweenStatutoryFederalIncomeTaxRateAndEffectiveIncomeTaxRateFromContinuingOperationsDetail">
        <link:definition>2424403 - Disclosure - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax Rate from Continuing Operations (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringPlan" roleURI="http://mcry.com/role/RestructuringPlan">
        <link:definition>2123100 - Disclosure - Restructuring Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringPlanAdditionalInformationDetail" roleURI="http://mcry.com/role/RestructuringPlanAdditionalInformationDetail">
        <link:definition>2423402 - Disclosure - Restructuring Plan - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringPlanTables" roleURI="http://mcry.com/role/RestructuringPlanTables">
        <link:definition>2323301 - Disclosure - Restructuring Plan (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RollForwardOfFairValueOfContingentConsiderationDetail" roleURI="http://mcry.com/role/RollForwardOfFairValueOfContingentConsiderationDetail">
        <link:definition>2405404 - Disclosure - Roll Forward of Fair Value of Contingent Consideration (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquity" roleURI="http://mcry.com/role/ShareholdersEquity">
        <link:definition>2133100 - Disclosure - Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityAdditionalInformationDetail" roleURI="http://mcry.com/role/ShareholdersEquityAdditionalInformationDetail">
        <link:definition>2433401 - Disclosure - Shareholders' Equity - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://mcry.com/role/StockBasedCompensation">
        <link:definition>2143100 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationAdditionalInformationDetail" roleURI="http://mcry.com/role/StockBasedCompensationAdditionalInformationDetail">
        <link:definition>2443402 - Disclosure - Stock Based Compensation - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationStockBasedCompensationExpensesDetail" roleURI="http://mcry.com/role/StockBasedCompensationStockBasedCompensationExpensesDetail">
        <link:definition>2443405 - Disclosure - Stock-Based Compensation - Stock Based Compensation Expenses (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfNonvestedRestrictedStockDetail" roleURI="http://mcry.com/role/StockBasedCompensationSummaryOfNonvestedRestrictedStockDetail">
        <link:definition>2443404 - Disclosure - Stock-Based Compensation - Summary of Nonvested Restricted Stock (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfStockOptionPlansDetail" roleURI="http://mcry.com/role/StockBasedCompensationSummaryOfStockOptionPlansDetail">
        <link:definition>2443403 - Disclosure - Stock-Based Compensation - Summary of Stock Option Plans (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://mcry.com/role/StockBasedCompensationTables">
        <link:definition>2343301 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationWeighedAverageKeyAssumptionsAndFairValueResultsForStockOptionsGrantedDetail" roleURI="http://mcry.com/role/StockBasedCompensationWeighedAverageKeyAssumptionsAndFairValueResultsForStockOptionsGrantedDetail">
        <link:definition>2443406 - Disclosure - Stock-Based Compensation - Weighed-Average Key Assumptions and Fair Value Results for Stock Options Granted (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://mcry.com/role/SubsequentEvents">
        <link:definition>2148100 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfFinancialAssetsMeasuredAtFairValueOnRecurringBasisDetail" roleURI="http://mcry.com/role/SummaryOfFinancialAssetsMeasuredAtFairValueOnRecurringBasisDetail">
        <link:definition>2405403 - Disclosure - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfReservesForUnrecognizedIncomeTaxBenefitsDetail" roleURI="http://mcry.com/role/SummaryOfReservesForUnrecognizedIncomeTaxBenefitsDetail">
        <link:definition>2424406 - Disclosure - Summary of Reserves for Unrecognized Income Tax Benefits (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2101100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>2401415 - Disclosure - Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesBasicAndDilutedWeightedAverageSharesOutstandingDetail" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesBasicAndDilutedWeightedAverageSharesOutstandingDetail">
        <link:definition>2401413 - Disclosure - Summary of Significant Accounting Policies - Basic and Diluted Weighted Average Shares Outstanding (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails">
        <link:definition>2401406 - Disclosure - Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesChangesInProductWarrantyAccrualDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesChangesInProductWarrantyAccrualDetails">
        <link:definition>2401412 - Disclosure - Summary of Significant Accounting Policies - Changes in Product Warranty Accrual (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesConcentrationOfRiskDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesConcentrationOfRiskDetails">
        <link:definition>2401408 - Disclosure - Summary of Significant Accounting Policies - Concentration of Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails">
        <link:definition>2401411 - Disclosure - Summary of Significant Accounting Policies - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesIntangibleAssetsDetail" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesIntangibleAssetsDetail">
        <link:definition>2401409 - Disclosure - Summary of Significant Accounting Policies - Intangible Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesNetEarningsPerShareAdditionalInformationDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesNetEarningsPerShareAdditionalInformationDetails">
        <link:definition>2401414 - Disclosure - Summary of Significant Accounting Policies - Net Earnings Per Share Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2201201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPrinciplesOfConsolidationDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesPrinciplesOfConsolidationDetails">
        <link:definition>2401403 - Disclosure - Summary of Significant Accounting Policies - Principles of Consolidation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails">
        <link:definition>2401410 - Disclosure - Summary of Significant Accounting Policies - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesReclassificationDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesReclassificationDetails">
        <link:definition>2401404 - Disclosure - Summary of Significant Accounting Policies - Reclassification (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesRestrictedCashDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesRestrictedCashDetails">
        <link:definition>2401407 - Disclosure - Summary of Significant Accounting Policies - Restricted Cash (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesRevenueRecognitionDetails" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesRevenueRecognitionDetails">
        <link:definition>2401405 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://mcry.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2301302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementaryInformationUnaudited" roleURI="http://mcry.com/role/SupplementaryInformationUnaudited">
        <link:definition>2149100 - Disclosure - Supplementary Information (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementaryInformationUnauditedDetails" roleURI="http://mcry.com/role/SupplementaryInformationUnauditedDetails">
        <link:definition>2449402 - Disclosure - Supplementary Information (Unaudited) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementaryInformationUnauditedTables" roleURI="http://mcry.com/role/SupplementaryInformationUnauditedTables">
        <link:definition>2349301 - Disclosure - Supplementary Information (Unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnamortizedDeferredGainDetail" roleURI="http://mcry.com/role/UnamortizedDeferredGainDetail">
        <link:definition>2413404 - Disclosure - Unamortized Deferred Gain (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="mrcy_AcquisitionLineMember" name="AcquisitionLineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization" name="AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationOptionsAssumedInAcquistion" name="AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationOptionsAssumedInAcquistion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_AdvancedComputingSolutionsMember" name="AdvancedComputingSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_AmendedLoanAgreementMember" name="AmendedLoanAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_AsiaPacificMember" name="AsiaPacificMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_AssetsDisposed" name="AssetsDisposed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_BacklogMember" name="BacklogMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_BuildingAndLeaseholdImprovementsMember" name="BuildingAndLeaseholdImprovementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessAcquisitionCostOfAcquiredEntityAmountInEscrow" name="BusinessAcquisitionCostOfAcquiredEntityAmountInEscrow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionCostOfAcquiredEntityAmountReleasedFromEscrow" name="BusinessAcquisitionCostOfAcquiredEntityAmountReleasedFromEscrow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForSettlementOfAcquireeStockOptions" name="BusinessAcquisitionCostOfAcquiredEntityCashPaidForSettlementOfAcquireeStockOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionFairValueOfUnvestedEmployeeShareBasedAwardsAssumed" name="BusinessAcquisitionFairValueOfUnvestedEmployeeShareBasedAwardsAssumed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_BusinessAcquisitionOneMember" name="BusinessAcquisitionOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessAcquisitionPurchasePriceAllocationAccountsPayableAndAccruedLiabilities" name="BusinessAcquisitionPurchasePriceAllocationAccountsPayableAndAccruedLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalentsAcquired" name="BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalentsAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionPurchasePriceAllocationDeferredTaxAsset" name="BusinessAcquisitionPurchasePriceAllocationDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessAcquisitionPurchasePriceAllocationDeferredTaxLiability" name="BusinessAcquisitionPurchasePriceAllocationDeferredTaxLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_BusinessCombinationContingentConsiderationArrangementsChangeinAmountofContingentConsiderationLiability1" name="BusinessCombinationContingentConsiderationArrangementsChangeinAmountofContingentConsiderationLiability1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessCombinationGoodwillImpairmentNumberofMarketAnalyses" name="BusinessCombinationGoodwillImpairmentNumberofMarketAnalyses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsReceivable" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxAssets" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAssets" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_CashAndCashEquivalentMaturityPeriod" name="CashAndCashEquivalentMaturityPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CashCollateralMember" name="CashCollateralMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_CashEquivalentsInExcessOfBorrowings" name="CashEquivalentsInExcessOfBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_CashFlowCovenant" name="CashFlowCovenant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ChangesinProductWarrantyAccrualLineItems" name="ChangesinProductWarrantyAccrualLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ChangesinProductWarrantyAccrualTable" name="ChangesinProductWarrantyAccrualTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CompanyMember" name="CompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CompletedTechnologyMember" name="CompletedTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ComputersEquipmentAndSoftwareMember" name="ComputersEquipmentAndSoftwareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ConcentrationOfRiskAccountsReceivablePercentage" name="ConcentrationOfRiskAccountsReceivablePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_ConsiderationForAcquisitionAbstract" name="ConsiderationForAcquisitionAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CustomerOneMember" name="CustomerOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CustomerThreeMember" name="CustomerThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_CustomerTwoMember" name="CustomerTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_DebtInstrumentBorrowingPeriod" name="DebtInstrumentBorrowingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_DeferredTaxAssetsAndLiabilitiesAxis" name="DeferredTaxAssetsAndLiabilitiesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_DeferredTaxAssetsAndLiabilitiesDomain" name="DeferredTaxAssetsAndLiabilitiesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_DeferredTaxAssetsInventoryValuationAndReceivableAllowances" name="DeferredTaxAssetsInventoryValuationAndReceivableAllowances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_DocumentDocumentandEntityInformationAbstract" name="DocumentDocumentandEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EffectiveIncomeTaxRateReconciliationAcquisitionCosts" name="EffectiveIncomeTaxRateReconciliationAcquisitionCosts" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EffectiveIncomeTaxRateReconciliationChangesInContingentConsideration" name="EffectiveIncomeTaxRateReconciliationChangesInContingentConsideration" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants" name="EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountries" name="EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EntityWideRevenueMajorProgramNumber" name="EntityWideRevenueMajorProgramNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_EscrowReleaseDate" name="EscrowReleaseDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_EuropeMember" name="EuropeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_FairValueAdjustmentsFromPurchaseAccounting" name="FairValueAdjustmentsFromPurchaseAccounting" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_FairValueMeasurementsLineItems" name="FairValueMeasurementsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_FairValueMeasurementsTable" name="FairValueMeasurementsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ForeignSubsidiariesMember" name="ForeignSubsidiariesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_GoodwillImpairmentTestFairValueAssumptionsIncreaseDecreaseInDiscountRate" name="GoodwillImpairmentTestFairValueAssumptionsIncreaseDecreaseInDiscountRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mrcy_GoodwillSubsequentRecognitionofDeferredTaxLiability" name="GoodwillSubsequentRecognitionofDeferredTaxLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_IncreaseDecreaseinRestrictedCashFinancingActivities" name="IncreaseDecreaseinRestrictedCashFinancingActivities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_InterestCoverageRatio" name="InterestCoverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_KORElectronicsMember" name="KORElectronicsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_KeyBankNationalAssociationMember" name="KeyBankNationalAssociationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_LNXMember" name="LNXMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_LeaseTermOptiontoRenew" name="LeaseTermOptiontoRenew" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_LeverageRatio" name="LeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="mrcy_LineOfCreditFacilityPermitsAdditionalBorrowingsAccordionFeature" name="LineOfCreditFacilityPermitsAdditionalBorrowingsAccordionFeature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_MercuryCommercialElectronicsMember" name="MercuryCommercialElectronicsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_MercuryDefenseAndIntelligenceSystemsMember" name="MercuryDefenseAndIntelligenceSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_MercuryDefenseSystemsMember" name="MercuryDefenseSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_MercuryFederalSystemsMember" name="MercuryFederalSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_MercuryIntelligenceSystemsMember" name="MercuryIntelligenceSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_MicroneticsMember" name="MicroneticsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_MinimumGrantDateFairValueOfNonqualifiedStockOptionsAsPercentageOfFairValueOfCommonStock" name="MinimumGrantDateFairValueOfNonqualifiedStockOptionsAsPercentageOfFairValueOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mrcy_MinimumPercentageOfOutstandingStockAcquiredForRightsToBeExercisable" name="MinimumPercentageOfOutstandingStockAcquiredForRightsToBeExercisable" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_MultipleDeliveryRevenueMember" name="MultipleDeliveryRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_NatureofBusinessNumberofContractorsUsingProductsandServices" name="NatureofBusinessNumberofContractorsUsingProductsandServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_NatureofBusinessNumberofProgramsUsingProductsandServices" name="NatureofBusinessNumberofProgramsUsingProductsandServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_NonCancelablePurchaseCommitmentsMember" name="NonCancelablePurchaseCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_NumberOfCustomersWithSignificantAccountsReceivableBalance" name="NumberOfCustomersWithSignificantAccountsReceivableBalance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="mrcy_NumberOfTermLoanBorrowings" name="NumberOfTermLoanBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_OtherAmortizableAssetsMember" name="OtherAmortizableAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_OtherMembersMember" name="OtherMembersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_PatentsAndLicensingRightsMember" name="PatentsAndLicensingRightsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_PercentageOfIncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement" name="PercentageOfIncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mrcy_PercentageOfRevenueRecognized" name="PercentageOfRevenueRecognized" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_PercentageOfVotingStock" name="PercentageOfVotingStock" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_PeriodOneMember" name="PeriodOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_PeriodTypeAxis" name="PeriodTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_PeriodTypeDomain" name="PeriodTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations" name="ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ProductWarrantyTerm" name="ProductWarrantyTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ProgramOneMember" name="ProgramOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_QuickRatio" name="QuickRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mrcy_RestrictedCashMember" name="RestrictedCashMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_RestructuringandOtherChargesMember" name="RestructuringandOtherChargesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_RevenuesFromTransactionsWithOtherGeographicLocationsOfSameEntity" name="RevenuesFromTransactionsWithOtherGeographicLocationsOfSameEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mrcy_SaleLeasebackTransactionDeferredGainCurrentPortion" name="SaleLeasebackTransactionDeferredGainCurrentPortion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_SaleLeasebackTransactionDeferredGainLongTerm" name="SaleLeasebackTransactionDeferredGainLongTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_SaleLeasebackTransactionDeferredGainTotal" name="SaleLeasebackTransactionDeferredGainTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mrcy_SaleLeasebackTransactionLeaseTerm" name="SaleLeasebackTransactionLeaseTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_SaleLeasebackTransactionLeaseTermsNumberOfRenewalOption" name="SaleLeasebackTransactionLeaseTermsNumberOfRenewalOption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScenarioOneMember" name="ScenarioOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScenarioTwoMember" name="ScenarioTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScheduleOfComponentsOfDeferredTaxProvisionLineItems" name="ScheduleOfComponentsOfDeferredTaxProvisionLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScheduleOfComponentsOfDeferredTaxProvisionTable" name="ScheduleOfComponentsOfDeferredTaxProvisionTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScheduleOfInventoryLineItems" name="ScheduleOfInventoryLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ScheduleOfInventoryTable" name="ScheduleOfInventoryTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ScheduleOfReconciliationOfNetIncomeTableTextBlock" name="ScheduleOfReconciliationOfNetIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ScheduleOfUnamortizedDeferredGainFromSaleLeasebackTransactionsTableTableTextBlock" name="ScheduleOfUnamortizedDeferredGainFromSaleLeasebackTransactionsTableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_SellersMember" name="SellersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_SeniorSecuredCreditFacilityMember" name="SeniorSecuredCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_SeniorUnsecuredCreditFacilitiesMember" name="SeniorUnsecuredCreditFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_SeveranceMember" name="SeveranceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualLife" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_ShareBasedCompensationStockOptionsAssumed" name="ShareBasedCompensationStockOptionsAssumed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ShareholdersEquityLineItems" name="ShareholdersEquityLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_ShareholdersEquityTable" name="ShareholdersEquityTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_SiliconValleyBankLoanAndSecurityAgreementMember" name="SiliconValleyBankLoanAndSecurityAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_StockOptionPlanNineteenNinetySevenMember" name="StockOptionPlanNineteenNinetySevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_StockOptionPlanTwentyZeroFiveMember" name="StockOptionPlanTwentyZeroFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mrcy_TaxCreditCarryforwardExpirationYear" name="TaxCreditCarryforwardExpirationYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_UnderwritingDiscountMember" name="UnderwritingDiscountMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mrcy_WeightedAverageNumberBasicAndDilutedSharesOutstandingAbstract" name="WeightedAverageNumberBasicAndDilutedSharesOutstandingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
</xsd:schema>
