ATK Completes the Acquisition of Swales Aerospace

MINNEAPOLIS, June 8 /PRNewswire-FirstCall/ -- Alliant Techsystems announced today that it has completed the acquisition of Swales Aerospace, a premier provider of satellite components and subsystems, small spacecraft and engineering services for NASA, Department of Defense and commercial satellite customers. The acquisition was subject to standard federal regulatory review and approval from the majority of shareholders in the employee-owned company.

Effective immediately, the Swales facility in Beltsville, Maryland becomes the headquarters of ATK's Space Division within the Mission Systems Group. Mike Cerneck, the previous Chief Executive Officer of Swales Aerospace, will lead the Division which includes the existing space structures and subsystems operations of ATK's current Space Division.

ATK is a $3.9 billion advanced weapon and space systems company employing approximately 16,400 people in 21 states. News and information can be found on the Internet at http://www.atk.com/.

Media Contact: Investor Contact: Bryce Hallowell Steve Wold Phone: [phone] Phone: [phone] E-mail:[e-mail] E-mail:[e-mail]