GLOBAL Defense Technology Announces Pricing of Initial Public Offering of Its Common Stock

MCLEAN, Virginia, November 20 - Global Defense Technology & Systems, Inc. (GLOBAL Defense Technology,
Nasdaq: GTEC), a leading provider of defense technologies to the national
security community, announced today that it has priced its initial public
offering of 4.6 million shares of common stock at US$13.00 per share, of
which 3.0 million shares are being sold by the Company and 1.6 million shares
are being sold by certain selling stockholders. The underwriters have a
30-day option to purchase up to an additional 690,000 shares of common stock
from one of the selling stockholders at the initial public offering price.
The offering is expected to close on or about November 25, 2009.

The Company will use the proceeds from this offering to repay debt and
for general corporate purposes, including future acquisitions. It will not
receive any proceeds from the sale of common stock by the selling
stockholders.

The offering was made through an underwriting syndicate led by Cowen and
Company, LLC, who acted as book-running manager. Stifel, Nicolaus & Company,
Incorporated, Raymond James & Associates, Inc. and SunTrust Robinson
Humphrey, Inc. acted as co-managers.

Copies of the preliminary prospectus relating to the offering may be
obtained by contacting Broadridge Financial Services, 1155 Long Island
Avenue, Edgewood, NY 11717, Attn: Prospectus Department. Phone
+1-631-274-2806. Fax +1-631-254-7140.

A registration statement relating to shares of the common stock of GLOBAL
Defense Technology has been filed with the Securities and Exchange Commission
and is effective. This press release shall not constitute an offer to sell or
the solicitation to buy, nor shall there be any sale of these securities, in
any jurisdiction in which such offer, solicitation or sale would be unlawful
prior to registration or qualification under the securities laws of any such
jurisdiction.

About Global Defense Technology & Systems, Inc.

Global Defense Technology & Systems, Inc. provides mission-critical
technology-based systems, solutions, and services for national security
agencies and programs of the U.S. government. Our services and solutions are
integral parts of mission-critical programs run by the Department of Defense,
Intelligence Community, Department of Homeland Security, federal law
enforcement agencies, and other parts of the federal government charged with
national security responsibilities. Learn more about GLOBAL Defense
Technology at www.globalgroup.us.com .

"Safe Harbor" Statement under the Private Securities Litigation Reform
Act of 1995: Statements in this announcement other than historical data and
information constitute forward-looking statements that involve risks and
uncertainties. A number of factors could cause our actual results,
performance, achievements or industry results to be very different from the
results, performance or achievements expressed or implied by such
forward-looking statements. Some of these factors include, but are not
limited to, the risk factors set forth in GLOBAL Defense Technology's final
prospectus relating to the offering, and such other filings that GLOBAL
Defense Technology makes with the SEC from time to time. Due to such
uncertainties and risks, readers are cautioned not to place undue reliance on
such forward-looking statements, which speak only as of the date hereof.

    Media Contact:             Lauren Peduzzi
                               t: +1-703-738-2861
                               e: media@globalgroup.us.com

    Investor Relations
     Contact:                  Jim Allen
                               t: +1-703-883-2760
                               e: investors@globalgroup.us.com

Lauren Peduzzi, +1-703-738-2861, media at globalgroup.us.com, or Investor Relations, Jim Allen , +1-703-883-2760, investors at globalgroup.us.com, both of Global Defense Technology & Systems, Inc.