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GTEC to Acquire Signature Government Solutions, LLC

FOR IMMEDIATE RELEASE: November 4, 2010

Media Contact: Lauren Peduzzi
t: +1.703.738.2861
e: media@gtec-inc.com

Investor Relations Contact: Joseph Cormier
t: +1.703.883.2771
e: investors@gtec-inc.com

GTEC to Acquire Signature Government Solutions, LLC

Adds Intelligence Community customer depth and comprehensive capabilities in mission-systems IT, Cyber Security and Intelligence Analysis

GTEC secures commitments for new $100 million revolving credit facility

MCLEAN, Va., November 4, 2010 - Global Defense Technology & Systems, Inc. (NASDAQ: GTEC), a provider of mission-critical, technology-based systems, solutions and services for national security agencies and programs of the US government, today announced that it had entered into a definitive agreement with Signature Consultants, L.L.C. to acquire its subsidiary, Signature Government Solutions, LLC (SGS), for $52.5 million in cash. SGS delivers sophisticated information technology, cyber security and intelligence analysis services in support of high priority mission systems and cyber security programs within the Intelligence Community. The deal is expected to be immediately accretive to GTEC's diluted earnings per share and is expected to close in the fourth quarter of 2010.

SGS, founded in 2003 and headquartered in Herndon, Virginia, has strong operating margins and expects to generate $37 million in revenue in 2010 with strong growth prospects for 2011 and beyond. All of its over 220 direct employees hold Top Secret/Sensitive Compartmented Information clearances or higher and, in addition to Northern Virginia, the company has a substantial operation in the Ft. Meade, Maryland area.

John Hillen, GTEC’s President & CEO, stated, "The addition of SGS into GTEC’s portfolio immediately adds new depth to our capabilities and customer footprint within the US Intelligence Community, especially when combined with the cyber and intelligence expertise brought to us with our acquisition of Zytel Corporation last month. SGS’s core competencies and past performance in information systems architecture, cyber security and network engineering reinforce our ambition to be the leading mid-sized defense technology company that delivers comprehensive, mission-critical solutions to support the most pressing needs of our national security clients."

John Stolberg, SGS's Executive Vice President, who will stay and lead the business for GTEC stated, "We are very excited about the potential to bring a greater depth and breadth of technologies, capabilities and mission expertise to our customers as we combine forces with GTEC in the mission-critical national security marketplace. We are particularly energized about becoming part of GTEC, as their passion for the national security mission, customer focus, agility and pursuit of excellence in customer support and delivery makes for an excellent home and cultural match for our employees, and opens up exciting new opportunities for growth and development."

GTEC has secured commitments for a $100 million revolving credit facility to finance the transaction, which will replace the current $50 million revolving credit facility. The new facility will contain similar terms to the current agreement and will have a three year maturity. The transaction is subject to customary closing conditions, including CFIUS approval.

About Signature Government Solutions, LLC
Signature Government Solutions, LLC (SGS) is a full-service IT and government solutions firm with a strong track record of past performance supporting mission-critical US intelligence, defense and law enforcement programs in highly secure environments. SGS has more than 200 cleared, highly skilled technical professionals with diverse backgrounds and broad experience in areas of: systems engineering, network engineering & telecommunications, IT security, intelligence analysis and solutions-based enterprise IT assessments. Learn more about SGS at www.signaturegs.com.

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