GPS Policy � Global Positioning Systems Directorate
The Global Positioning Systems Directorate is a joint service effort directed by the US Air Force and managed at the Space and Missile Systems Center, Air Force Space Command, Los Angeles Air Force Base, Calif. The directorate is the Department of Defense acquisition office for developing and producing GPS satellites, ground systems and military user equipment.
As a service to GPS users, the Department of Transportation has established the "Navigation Information Service" (formerly "GPS Information Service") as a point of contact for civil GPS users. Operated and maintained by the United States Coast Guard, the NIS can be reached at (703) 313-5900, seven days a week, 24 hours a day, and at www.navcen.uscg.gov .