ATK Names John J. Cronin President of Newly Formed Mission Systems Group

Minneapolis, March 30, 2006 – Alliant Techsystems (NYSE: ATK) has named John J. Cronin (Jack) President of the company’s newly formed Mission Systems Group. He also has been elected a corporate officer with the title of Senior Vice President.

Cronin leads the largest of ATK’s three business groups, with sales in excess of $1.3 billion, approximately 5,000 employees, and leading market positions in advanced weapons; space systems and sensors; propulsion and control systems; integrated aircraft systems; and tactical systems.

Cronin brings to his new position 20 years of operations and business development leadership experience in the aerospace and defense industry. Most recently he was President of Raytheon Systems Ltd. (RSL), United Kingdom, where he led an organization with multiple defense and commercial products ranging from individual components to total integrated systems. RSL serves as the prime contractor on a number of major defense programs, including Airborne Stand-Off Radar (ASTOR) and Paveway IV Precision Guided Bomb.

“We are pleased to hand over the reigns of our new Mission Systems Group to Jack Cronin,” said Dan Murphy, Chairman and Chief Executive Officer. “Jack is an accomplished executive with an impressive record of achievement. I look forward to working closely with him as we move ATK forward.”

Cronin joined Raytheon Company in 1986 as a program manager and engineer, and subsequently held a series of business development and corporate development positions. In 1998, he was named Director of Advanced Systems, where he was responsible for Advanced Naval Radars, including SPY-3, and the management of a significant portfolio of special programs. A year later he was promoted to Vice President for Future Surface Combatants and Deputy General Manager for Naval and Maritime Integrated Systems. In this capacity he was leader for DD(X), the U.S. Navy’s next-generation destroyer for which Raytheon serves as the systems integrator. He was selected to lead Raytheon’s United Kingdom operations in 2003.

A 1978 graduate of the United States Military Academy in West Point, N.Y., Cronin served on active duty as a U.S. Army officer and helicopter pilot for eight years. He holds a master of science degree in systems management from the University of Southern California.

ATK’s Mission Systems Group was formed as part of an ongoing strategy to more closely position the company’s operations along market areas and enhance operating efficiencies. The group comprises the businesses previously operated by the Precision Systems Group, the Advanced Propulsion and Space Systems Group, and ATK Mission Research. The company’s other business units are the Ammunition Systems Group and the Launch Systems Group.

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 www.atk.com.

Contact Information

Bryce Hallowell

ATK Corporate Communications

Alliant Techsystems

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