<SUBMISSION>
<ACCESSION-NUMBER>0001144204-12-017740
<TYPE>SC 14D9/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20120328
<DATE-OF-FILING-DATE-CHANGE>20120328
<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>12721096
</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>v307624_sc14d9a.htm
<TEXT>
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<P STYLE="margin: 0"></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. 5)</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">&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">This Amendment No. 5 (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, Amendment No. 2 to the Schedule 14D-9 filed on March
9, 2012, Amendment No. 3 to the Schedule 14D-9 filed on March 16, 2012 and Amendment No. 4 to the Schedule 14D-9 filed on March
23, 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, the Amendment No. 4 to the Schedule TO filed on March 16, 2012, the Amendment No. 5 to the Schedule
TO filed on March 23, 2012 and the Amendment No. 6 to the Schedule TO filed on March 28, 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. 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; background-color: white">Item&nbsp;8 of the Schedule&nbsp;14D-9
is hereby amended and supplemented by adding the following text at the end of the subsection entitled <I>Extension of the Offer</I>:</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; background-color: white"><FONT STYLE="color: black">&ldquo;</FONT>Wells
Fargo Bank, N.A., the depositary of the Offer, has indicated that as of Tuesday, March 27, 2012, approximately 20,299,120 shares
of Company Common Stock had been validly tendered and not withdrawn pursuant to the Offer, representing approximately 88% of the
outstanding shares.<FONT STYLE="color: black">&rdquo;</FONT></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">&nbsp;</P>

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

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

<P STYLE="margin: 0; font-weight: bold">ITEM 9. EXHIBITS.</P>


<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">The following Exhibits are filed herewith
or incorporated herein by reference:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">&nbsp;&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="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt; width: 13%"><B>Exhibit No.</B></TD>
    <TD STYLE="padding: 0; width: 1%; text-indent: 0">&nbsp;</TD>
    <TD NOWRAP STYLE="padding: 0; font-weight: bold; width: 80%; text-indent: 0">Description</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(a)(12)</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 Federal Solutions on March 23, 2012. (incorporated by reference to Exhibit (a)(12) to the Company&rsquo;s Amendment No. 4 to Schedule 14D-9 filed with the Securities and Exchange Commission on March 23, 2012)</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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>
</TABLE>

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

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

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

<P STYLE="margin: 0">&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="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt; width: 13%">(e)(2)</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 1%">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 80%">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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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>
<TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(e)(4)</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 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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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 STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 12pt">(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">&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>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 10pt; padding: 0; text-indent: 0">ATS Corporation</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 10pt; padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; padding: 0; text-indent: 0">By:</TD>
    <TD COLSPAN="2" STYLE="font-size: 10pt; padding: 0; text-indent: 0; border-bottom: Black 1pt solid">/s/ Pamela A. Little</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 56%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 4%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 6%; font-size: 10pt; padding: 0; text-indent: 0">Name:</TD>
    <TD STYLE="width: 34%; font-size: 10pt; padding: 0; text-indent: 0">Pamela A. Little</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; padding: 0; text-indent: 0">Title:</TD>
    <TD STYLE="font-size: 10pt; padding: 0; text-indent: 0">Co-Chief Executive Officer and Chief Financial Officer</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">&nbsp;</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">Dated: March 28, 2012</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"></P>

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