Raytheon, 425 Commerce Ct, Lompoc, CA 93436, US

Established in 1982, Orbital Sciences Corporation develops and manufactures small rockets and space systems for commercial, military and civil government customers. It provides a range of satellites and launch vehicles, including low and geosynchronous earth orbit and planetary spacecraft for communications, remote sensing, and scientific and defense missions. The company also offers human-rated space systems for earth orbit, lunar and other missions. Orbital Sciences Corporation provides a variety of missile defense systems. It offers satellite subsystems and space-related technical services to government agencies and laboratories. The company also provides launch vehicle procurement, customer support and technical training services for its clients. In addition, Orbital Sciences Corporation has designed and integrated ground systems for the command and control of in-orbit spacecraft. Headquartered in Dulles, Va., the company maintains one of its branch locations in Vandenberg Air Force Base, Calif.