ATK President and Chief Executive Officer Mark DeYoung to Speak at the Morgan Stanley Global Industrials Unplugged Conference


MINNEAPOLIS, Aug. 26 - Alliant Techsystems (NYSE: ATK) will webcast the remarks of its President and Chief Executive Officer, Mr. Mark DeYoung, when he appears at the Morgan Stanley Global Industrials Unplugged Conference in New York, NY on September 1, 2010. Mr. DeYoung is scheduled to provide formal comments to the conference attendees beginning at 1:00 pm (EDT).

Access to the audio-only webcast will be available at: www.atk.com/InvestorRelations/investrelate_investorinfo.asp. A replay of the webcast will be available on the company's website within 24 hours after the presentation and will remain on the site for one year.

ATK is a premier aerospace and defense company with more than 18,000 employees in 22 states, Puerto Rico and internationally, and revenues in excess of $4.8 billion. News and information can be found on the Internet at www.atk.com.

Source: ATK

Contact:

Media,

Bryce Hallowell,

+1-952-351-3087,

bryce.hallowell@atk.com,

or Investors,

Jeff Huebschen,

+1-952-351-2929,

jeff.huebschen@atk.com,

both of ATK

Web Site: www.atk.com/

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