Orbital Sciences Corporation develops and manufactures small space and rocket systems for commercial, military and civil government customers. The companys primary products are satellites and launch vehicles, which include low-orbit, geosynchronous and planetary spacecraft for communications, remote sensing, scientific and defense missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense systems that are used as interceptor and target vehicles. It also offers space-related technical services to government agencies and develops and builds satellite-based transportation management systems for public transit agencies and private vehicle fleet operators. Orbital Sciences Corporation is headquartered in Dulles, Va.