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ATK and U.S. Army Conduct Successful PGK Flight Tests

ATK Success Demonstrates the Reality of Affordable Precision for Artillery
ATK's PGK on Track for Critical Design Review This Summer

MINNEAPOLIS, May 7 /PRNewswire-FirstCall/ -- Alliant Techsystems (NYSE: ATK) and the U.S. Army recently conducted a series of successful flight tests of the company's 155mm Howitzer Precision Guidance Kit (PGK) at the Yuma Proving Grounds, Yuma, Arizona. PGK is a GPS guidance kit with fuzing functions for artillery projectiles. It allows the projectile to steer itself toward a tight, pre-programmed position, thereby accomplishing reduced ballistic dispersion of artillery projectiles.

PGK features a GPS-based, fixed canard guidance and control package with gun-hardened electronics, a self-generated power supply, and a minimum number of moving parts that fits into the existing fuze well of 155mm high explosive projectiles. The successful tests are milestones in the rapid System Design and Development-phase of the program, supporting a Critical Design Review (CDR) this summer.

Testing included the first guide-to-hit demonstration of a PGK installed on an M795 high explosive projectile. This test confirmed PGK's accuracy at a range of ~14 kilometers. The round performed preprogrammed maneuvers during the first 20 seconds of flight, then commenced guidance and impacted ~17.5 meters from the target, well within objective requirements. Previous successful guide-to-hit testing on the program has focused on the M549 rocket assisted projectile. Other testing, including demonstration of the tactical form factor GPS subsystem, completed all planned technical demonstrations required for entrance into this subsystem's CDR.

PGK is a low-cost, fuze-sized module designed to be compatible with conventional M795, M549 and M107 high explosive rounds. Because it works with the Army's existing inventory of artillery shells and its current gun systems, PGK will quickly and affordably bring next-generation accuracy to battlefield commanders of artillery units.

"PGK provides the 155 Howitzer with unprecedented affordability and performance, turning it into a precision weapon system that reduces collateral damage and effectively changes the mission scope of artillery in the field," said ATK Advanced Weapons Vice President and General Manager Dave Wise. "Not only will PGK's affordable precision revolutionize the way artillery is used, it will significantly reduce the cost of operations required when using unguided artillery rounds."

ATK is a premier aerospace and defense company with more than 17,000 employees in 21 states and over $4.1 billion in revenue. News and information can be found on the Internet at http://www.atk.com/.

Certain information discussed in this press release constitutes forward- looking statements as defined in the Private Securities Litigation Reform Act of 1995. Although ATK believes that the expectations reflected in such forward-looking statements are based on reasonable assumptions, it can give no assurance that its expectations will be achieved. Forward-looking information is subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those factors are: the challenges of developing next-generation weapons programs, changes in governmental spending, budgetary policies and product sourcing strategies; the company's competitive environment; the terms and timing of awards and contracts; and economic conditions. ATK undertakes no obligation to update any forward-looking statements. For further information on factors that could impact ATK, and statements contained herein, please refer to ATK's most recent Annual Report on Form 10-K and any subsequent quarterly reports on Form 10-Q and current reports on Form 8-K filed with the U.S. Securities and Exchange Commission.

   Media Contact:                              Investor Contact:

   Bryce Hallowell                             Steve Wold
   Phone:  952-351-3087                        Phone:  952-351-3056
   E-mail:  bryce.hallowell@atk.com            E-mail:  steve.wold@atk.com