Alliant Techsystems (NYSE: ATK) and its Board of Directors has unanimously voted to appoint Mark DeYoung as the company's new President and Chief Executive Officer (CEO), effective immediately. Mr. DeYoung was also elected to serve on the company's Board of Directors.

Mr. DeYoung previously led ATK's Armament Systems group as President of the company's largest business entity. In this capacity, he led the group's expansion from approximately $600 million of revenue in Fiscal Year 2003, to a projected $2.1 billion in revenue in Fiscal Year 2010. His lean manufacturing initiatives and modernization efforts yielded continued margin improvements within Armament Systems. Through aggressive acquisition and organic growth into adjacent markets, Armament Systems expanded into commercial ammunition, the tactical accessories market, and international markets for non-standard ammunition and medium-caliber gun systems. Mr. DeYoung is a 25-year veteran of ATK and its predecessor companies. His years of experience at ATK source from key company businesses in advanced engineering and propulsion systems.