Federal Services Acquisition Corporation Completes Acquisition of Advanced Technology Systems, Inc. and Announces Name Change to "ATS Corporation" and Stock and Warrant Repurchase Program

Market Wire, January, 2007

Federal Services Acquisition Corporation (OTCBB: FDSA) (OTCBB: FDSAU) (OTCBB: FDSAW) today announced the completion of its acquisition of Advanced Technology Systems, Inc. ("ATS"). The Company acquired all of the outstanding capital stock of ATS, and ATS has become a wholly-owned subsidiary of the Company.

Dr. Edward H. Bersoff, who became the Company's Chairman, President and Chief Executive Officer immediately following the completion of the acquisition, commented, "We are extremely pleased to complete this acquisition. Getting to this point has been difficult and time-consuming, but we believe the completion of the acquisition of ATS and the implementation of our business strategy will be rewarding for all of our core constituents -- stockholders, employees and customers."

The Company is changing its name to ATS Corporation from Federal Services Acquisition Corporation effective today. However, the Company's common stock, units and warrants will continue to trade on the over-the-counter bulletin board (OTCBB) under the symbols FDSA, FDSAU, and FDSAW, respectively.

The Company also announced that its Board of Directors has authorized a repurchase program involving the purchase of up to $15,000,000 worth of its common stock and warrants in the open market from time to time over the next twelve months. Following completion of the previously announced redemption of 2,625,000 founders' shares at a price of $0.0011 per share and the conversion of approximately 3,625,000 shares into cash in connection with the vote to approve the acquisition of ATS, the Company will have a total of approximately 20,000,000 shares of common stock outstanding. This total does not include any shares issuable upon the exercise of the Company's outstanding warrants to purchase 42,000,000 shares of common stock at an exercise price of $5.00 per share. The warrants become exercisable today.

The timing of the share and warrant repurchases under the program will depend on a variety of factors, including market conditions, but will begin on or about the third business day following this announcement, and may be suspended or discontinued at any time. Common stock acquired through the repurchase program will be held as treasury shares and may be used for general corporate purposes, including reissuances in connection with acquisitions, employee stock option exercises or other employee stock plans. The Company currently expects the repurchase program to focus on purchases of common stock rather than warrants. Any warrants acquired through the repurchase program will be cancelled.

FORWARD-LOOKING STATEMENTS

This document may contain "forward-looking statements" -- that is, statements related to future -- not past -- events, plans, and prospects. In this context, forward-looking statements may address matters such as our expected future business and financial performance, and often contain words such as "guidance," "expects," "anticipates," "intends," "plans," "believes," "seeks," "should," or "will." Forward-looking statements by their nature address matters that are, to different degrees, uncertain. For ATS Corporation, particular uncertainties that could adversely or positively affect the Company's future results include: risks related to the government contracting industry, including possible changes in government spending priorities; risks related to the Company's business, including its dependence on contracts with U.S. Federal Government agencies and departments and continued good relations, and being successful in competitive bidding, with those customers; uncertainties as to whether revenues corresponding to the Company's contract backlog will actually be received; risks related to the implementation of its strategic plan, including the ability to make acquisitions and the performance and future integration of acquired businesses; and other risks and uncertainties disclosed in the Company's filings with the Securities and Exchange Commission. These uncertainties may cause ATS Corporation's actual future results to be materially different than those expressed in the Company's forward-looking statements. ATS Corporation does not undertake to update its forward-looking statements.

ABOUT ATS CORPORATION AND ADVANCED TECHNOLOGY SYSTEMS, INC.

ATS Corporation (formerly Federal Services Acquisition Corporation) was formed to acquire an operating business in the federal services and defense industries. Federal Services consummated its initial public offering on October 25, 2005, receiving net proceeds of approximately $119 million through the sale of 21,000,000 units of its securities at $6.00 per unit.

Advanced Technology Systems, Inc. ("ATS"), headquartered in McLean, Virginia, is a leading provider of systems integration and application development, IT infrastructure management and strategic IT consulting services to U.S. federal government agencies. Since its founding in 1978, ATS has been recognized for its custom software development and software integration capabilities and its deep domain expertise in federal government financial, human resource and data management systems.