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ATK Conducts Successful Ballistic Flight Test of the Precision Guided Mortar Munition


Minneapolis, February 13, 2006 – In a series of flight tests conducted at the Yuma Proving Grounds, Alliant Techsystems (NYSE: ATK) successfully demonstrated the ballistic characteristics of the most advanced mortar round ever developed for the U.S. Army – ATK’s precision guided mortar munition (PGMM). A total of 49 rounds were shot over three days from a 120mm mortar, achieving all test objectives.

The primary objectives of the test included establishing the appropriate charge weight to ensure proper muzzle velocity when the round exits the mortar tube; evaluating range performance, obtaining aeroballistics data and verifying structural integrity at hot, cold and ambient temperatures. Secondary objectives included feedback from mortar operators on the handling of the new PGMM round and collection of mortar interior environment data.

ATK and the U.S. Army have established an extensive test regimen to ensure that the first PGMM production rounds will be ready for delivery no later than 2010.

PGMM is an advanced weapon system that offers soldiers a precise, multi-purpose indirect fire capability that can fly in excess of seven kilometers and impact within one meter of the target. It will be able to defeat protected enemy with low collateral damage in 2 rounds or less.

ATK is a $3.1 billion advanced weapon and space systems company employing approximately 15,000 people in 23 states. News and information can be found on the Internet at

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 advanced weapon systems, 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, reference should be made to ATK’s filings with the Securities and Exchange Commission, including quarterly reports on Form 10-Q, current reports on Form 8-K, and ATK’s Annual Report on Form 10-K for the fiscal year ended March 31, 2005.


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