Program Builds on Proven 155mm PGK Design for 105mm Cannon-Fired Munitions

      Innovative Design is a Low-Risk, Affordable Solution to Enhance

                    Effectiveness of Existing Artillery



    MINNEAPOLIS, Aug. 11 /EMWNews/ -- Alliant Techsystems Inc.

(NYSE: ATK) announced today that it has successfully demonstrated the

capability to divert a 105mm artillery round using its existing 155mm

Precision Guidance Kit (PGK) with minimal modification to the current

design.



    ATK recently conducted tests of the PGK on M927 rounds at Yuma Proving

Ground, Yuma, Ariz. The tests verified that the ATK-designed PGK provides

more than twice the control authority necessary to meet 105mm performance

requirements. The tests were funded internally by the company to

demonstrate the robust design capability of the PGK.



    Already proven on the 155mm Howitzer, the 105mm PGK incorporates 99

percent of the existing 155mm PGK design. The only difference is a single

mechanical part. This approach maximizes the Army's investment in this

technology. The high degree of commonality provides a low-risk approach

that significantly reduces development and qualification costs, as well as

the schedule to field a 105mm PGK. This commonality allows for a near-term

affordable transformation of existing 105mm artillery rounds into precision

weapons that improve combat effectiveness while reducing the potential for

collateral damage.



    ATK competed for and won the system design and development (SDD)

contract for the 155mm PGK in May 2007. The PGK is a low-cost, fuze-sized

guidance kit intended to replace NATO standard height of burst, and point

detonation fuzes. The kit improves projectile accuracy by coupling global

positioning system (GPS) technology with ATK's fixed canard guidance

system. The GPS technology provides location and time during flight and

ATK's unique guidance, navigation, and control approach determines

trajectory and makes in-flight corrections to the target.



    ATK is a premier aerospace and defense company with more than 17,000

employees in 21 states and $4.5 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: uncertainties associated with

developing precision guided munitions, 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.






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