Northrop Grumman Innovation Systems

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ATK Spacecraft Systems is a part of ATK Space Systems, which is one of the world's leading companies that provides rocket propulsion systems and satellite components and subsystems. ATK Space Systems offers a variety of engineering and technical services. It also uses advanced signal processing and communication techniques. The company provides thermal management systems and pressure tanks. ATK Space Systems also offers advanced reactive materials and warhead technologies. It is a part of Alliant Techsystems, which is also known as ATK. Alliant Techsystems is a aerospace and defense company that has a staff of more than 17,000 employees in over 20 U.S. states. It has annual sales revenue of nearly $4 billion.