<SUBMISSION>
<ACCESSION-NUMBER>0001144204-12-015652
<TYPE>SC 14D9/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20120316
<DATE-OF-FILING-DATE-CHANGE>20120316
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>ATS CORP
<CIK>0001325460
<ASSIGNED-SIC>8742
<IRS-NUMBER>113747950
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 14D9/A
<ACT>34
<FILE-NUMBER>005-81087
<FILM-NUMBER>12698149
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
<PHONE>571-766-2400
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Federal Services Acquisition CORP
<DATE-CHANGED>20050429
</FORMER-COMPANY>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>ATS CORP
<CIK>0001325460
<ASSIGNED-SIC>8742
<IRS-NUMBER>113747950
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 14D9/A
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
<PHONE>571-766-2400
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Federal Services Acquisition CORP
<DATE-CHANGED>20050429
</FORMER-COMPANY>
</FILED-BY>
<DOCUMENT>
<TYPE>SC 14D9/A
<SEQUENCE>1
<FILENAME>v306304_sc14d-9a.htm
<DESCRIPTION>FORM SC 14D9/A
<TEXT>
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     <TITLE></TITLE>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SCHEDULE 14D-9</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Amendment No. 3)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SOLICITATION/RECOMMENDATION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>STATEMENT UNDER SECTION 14(d)(4) OF THE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES EXCHANGE ACT OF 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATS Corporation</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Name of Subject Company)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATS Corporation</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Name of Person Filing Statement)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>COMMON STOCK, PAR VALUE $0.0001 PER SHARE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Title of Class of Securities)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>00211E104</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(CUSIP Number of Class of Securities)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pamela Little</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Co-Chief Executive Officer and Chief
Financial Officer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATS Corporation</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>7925 Jones Branch Drive</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>McLean, VA 22102</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Telephone: (571) 766-2400</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Name, address and telephone numbers
of person authorized to receive notices and</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>communications on behalf of the persons
filing statement)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>With copies to:</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Squire Sanders (US) LLP</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>1200 19<SUP>th</SUP> Street, NW<BR>
Suite 300<BR>
Washington, D.C. 20036</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Attention: James J. Maiwurm</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Telephone: (202) 626-6600</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Check the box if the filing
relates solely to preliminary communications made before the commencement of a tender offer.</P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">This Amendment No. 3
(this &ldquo;<U>Amendment</U>&rdquo;) amends and supplements the Solicitation/Recommendation Statement on Schedule 14D-9
(together with any amendments and supplements thereto, the &ldquo;<U>Schedule 14D-9</U>&rdquo;) filed by ATS Corporation, a
Delaware corporation (&ldquo;<U>ATS</U>&rdquo; or the &ldquo;<U>Company</U>&rdquo;) with the Securities and Exchange
Commission (the &ldquo;<U>SEC</U>&rdquo;) on February 29, 2012, as amended by Amendment No. 1 to the Schedule 14D-9 filed on
March 6, 2012 and Amendment No. 2 to the Schedule 14D-9 filed on March 9, 2012. The Schedule 14D-9 relates to the tender
offer by Atlas Merger Subsidiary, Inc., a Delaware corporation (the &ldquo;<U>Offeror</U>&rdquo;) and wholly owned subsidiary
of Salient Federal Solutions, Inc., a Delaware corporation (&ldquo;<U>Parent</U>&rdquo;), to purchase all outstanding shares
of the Company&rsquo;s common stock, par value $0.0001 per share (the &ldquo;<U>Shares</U>&rdquo;), at $3.20 per Share in
cash, without interest, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated February 28,
2012 (the &ldquo;<U>Offer to Purchase</U>&rdquo;), and in the related Letter of Transmittal (which, together with any
amendments or supplements, collectively constitute the &ldquo;<U>Offer</U>&rdquo;). The Offer is described in a Tender Offer
Statement on Schedule TO filed by the Offeror and Parent with the SEC on February 28, 2012, as amended by the Amendment No. 1
to the Schedule TO filed on March 1, 2012, the Amendment No. 2 to the Schedule TO filed on March 6, 2012<B>, </B> the
Amendment No. 3 to the Schedule TO filed on March 9, 2012 and the Amendment No. 4 to the Schedule TO filed on March 16, 2012. The
Offer to Purchase and the Letter of Transmittal were filed with the Schedule 14D-9 as Exhibits (a)(1)(A) and (a)(1)(B),
respectively.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">Except as otherwise set forth below, the
information set forth in the Schedule 14D-9 remains unchanged and is incorporated by reference as relevant to the items in this
Amendment. Capitalized terms used and not defined herein shall have the meanings assigned to such terms in the Schedule 14D-9.
This Amendment is being filed to reflect certain updates as reflected below.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 23.75pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>ITEM 8&#9;ADDITIONAL INFORMATION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 8 of the Schedule 14D-9 is amended and supplemented by
adding the following at the end of the subsection entitled &ldquo;<I>(b)</I> <I>Regulatory Approvals&mdash;U.S. Antitrust Approval</I>&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&ldquo;At 11:59 p.m., New York City Time, on March 15, 2012,
the waiting period applicable to the Offer and the Merger under the HSR Act expired. Accordingly, the condition of the Offer relating
to the expiration or termination of the HSR Act waiting period has been satisfied.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> &nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD NOWRAP STYLE="padding: 0; font-weight: bold; text-indent: 0; width: 13%">Exhibit No.</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 1%">&nbsp;</TD>
    <TD NOWRAP STYLE="padding: 0; font-weight: bold; text-indent: 0; width: 84%">Description</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(1)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Offer to Purchase, dated February 28, 2012 (incorporated by reference to Exhibit (a)(1)(A) to the Schedule TO of Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. filed with the Securities and Exchange Commission on February 28, 2012 (the &ldquo;<I>Schedule TO</I>&rdquo;)).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(2)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Letter of Transmittal, dated February 28, 2012 (incorporated by reference to Exhibit (a)(1)(B) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(3)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Notice of Guaranteed Delivery (incorporated by reference to Exhibit (a)(1)(C) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(4)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees (incorporated by reference to Exhibit (a)(1)(D) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(5)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Letter to Clients for use by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees (incorporated by reference to Exhibit (a)(1)(E) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(6)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Option Notice and Cancellation Agreement (incorporated by reference to Exhibit (a)(6) to the Company&rsquo;s Schedule 14D-9 filed with the Securities and Exchange Commission on February 29, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(7)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Opinion of Sagent Advisors Inc., dated February 21, 2012 (incorporated by reference to Exhibit (a)(7) to the Company&rsquo;s Schedule 14D-9 filed with the Securities and Exchange Commission on February 29, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(8)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Joint Press Release issued by ATS Corporation and Salient on February 21, 2012 (incorporated by reference to Exhibit 99.1 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(9)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Salient-ATSC Transition Help Q&amp;As, dated March 6, 2012 (incorporated by reference to Exhibit (a)(9) to the Company&rsquo;s Amendment No. 1 to Schedule 14D-9 filed with the Securities and Exchange Commission on March 6, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(10)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Complaint filed on March 2, 2012 in the Court of Chancery of the State of Delaware, captioned Stourbridge Investments LLC, individually and on behalf of all others similarly situated v. Edward H. Bersoff, Kevin S. Flannery, John H. [sic] Schulte, Edward J. Smith, Anita K. Jones, Joel R. Jacks, James R. Swartwout, ATS Corporation, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (Case No. 7300) (incorporated by reference to Exhibit (a)(10) to the Company&rsquo;s Amendment No. 2 to Schedule 14D-9 filed with the Securities and Exchange Commission on March 9, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(a)(11)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Complaint filed on March 6, 2012 in the United States District Court of the Eastern District of Virginia, captioned Giancarlos Guerra, on behalf of himself and all others similarly situated v. ATS Corporation, Edward H. Bersoff, Kevin Flannery, Joel Jacks, Anita K. Jones, Peter Schulte, Edward Smith, James R. Swartwout, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (Civil Action No. 1:12 CV 244) (incorporated by reference to Exhibit (a)(11) to the Company&rsquo;s Amendment No. 2 to Schedule 14D-9 filed with the Securities and Exchange Commission on March 9, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(1)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Agreement and Plan of Merger, dated as of February 21, 2012, by and among Salient Federal Solutions, Inc., Atlas Merger Subsidiary, Inc. and ATS Corporation (incorporated by reference to Exhibit 2.1 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(2)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Stockholders&rsquo; Agreement, dated as of February 21, 2012, by and among Joel R. Jacks, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.2 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(3)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Stockholders&rsquo; Agreement, dated as of February 21, 2012, by and among Peter M. Schulte, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.3 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
</TABLE>

<P STYLE="margin: 0">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="margin: 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 13%">(e)(4)</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 1%">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 84%">Stockholders&rsquo; Agreement, dated as of February 21, 2012, by and among Dr. Edward H. Bersoff, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.4 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(5)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Undertaking Agreement, dated as of February 21, 2012, by and among Lampe, Conway and Co., LLC, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.5 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(6)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Undertaking Agreement, dated as of February 21, 2012, by and among Revelation Capital Management Ltd., Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.6 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(7)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Undertaking Agreement, dated as of February 21, 2012, by and among Carl Marks &amp; Co. Inc. and other parties, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.7 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(8)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Undertaking Agreement, dated as of February 21, 2012, by and among Minerva Group, LP, Salient Federal Solutions, Inc. and Atlas Merger Subsidiary, Inc. (incorporated by reference to Exhibit 2.8 to the Company&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 21, 2012).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(9)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Confidentiality Agreement, dated as of March 31, 2011, between Salient Federal Solutions, Inc. and ATS Corporation (incorporated by reference to Exhibit (d)(11) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(10)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Exclusivity Agreement, dated as of October 4, 2011, between Salient Federal Solutions, Inc. and ATS Corporation (incorporated by reference to Exhibit (d)(9) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(11)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">First Amendment to Exclusivity Agreement, dated as of November 4, 2011, between Salient Federal Solutions, Inc. and ATS Corporation (incorporated by reference to Exhibit (d)(10) to the Schedule TO).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(12)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Employment Agreement, dated September 2, 2010, between ATS Corporation and John Hassoun (incorporated by reference to Exhibit 10.16 to the Company&rsquo;s Form 10-K for the fiscal year ended December 31, 2010).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(13)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Employment Agreement, dated February 3, 2008, between ATS Corporation and Pamela A. Little (incorporated by reference to Exhibit 10.1 to the Company&rsquo;s Current Report on Form 8-K filed February 6, 2008).</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">(e)(14)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Bersoff Agreement between Dr. Bersoff and the Company dated December 15, 2010 (incorporated by reference to Exhibit 10.1 to the Company&rsquo;s Form 8-K on December 16, 2010).</TD>
    </TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">After due inquiry and to the best of my knowledge
and belief, I certify that the information set forth in this Statement is true, complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 0; padding-left: 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">ATS Corporation</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P></TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">By:&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; border-bottom: Black 1pt solid">&nbsp; /s/ Pamela A Little</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; width: 47%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 5%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 7%">Name:&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 38%">Pamela A. Little</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; width: 3%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Title:&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Co-Chief Executive Officer and Chief Financial Officer</P></TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dated: March 16, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>



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