Alliant Techsystems Inc. (ATK) is a supplier of aerospace and defense products to the United States government, allied nations, and prime contractors. It is also a supplier of ammunition and related accessories to law enforcement agencies and commercial customers. As of March 31, 2009, the Company had three segments: ATK Armament Systems, ATK Mission Systems and ATK Space Systems. ATK Armament Systems develops and produces military ammunition and gun systems, commercial products, tactical accessories and equipment, and propellant and energetics. ATK Mission Systems operates in two areas: Weapon Systems and Aerospace Systems. ATK Space Systems operates in two businesses: Launch Systems and Spacecraft Systems. The Company produces rocket motors for tactical weapons fired by aircraft, ships, ground platforms, and combat troops. In March 2009, the Company acquired Eagle Industries.