With headquarters in Reston,VA., Northrop Grumman Mission Systems is a leading global integrator of complex, mission-enabling systems and services for federal agencies engaged in defense and intelligence activities, as well as federal civilian organizations, state and local governments and commercial clients. Leveraging 50 years of expertise, the sector's technology leadership spans five business areas: strategic systems; missile defense; intelligence, surveillance and reconnaissance; homeland security; command and control; and technical services and training. Mission Systems has 15,000 employees in more than 300 locations around the world.