6594th Instrumentation Squadron (1 Oct 1959 – 1 Jul 1965) 6595th Test Squadron (20 Feb 1961 – 1 Jul 1965) Detachments Det 1 – Sunnyvale, California (1 Jul 1965 – 1 Jul 1977) Det 2 – Vandenberg Tracking Station, California (1 Oct 1979 – 1 Oct 1987) Det 3 – Thule Tracking Station, Greenland (1 Oct 1979 – 1 Oct 1987) Det 4 – Mahé, Seychelles (15 Jul 1972 – 1 Oct 1987) Det 5 – Guam Tracking Station, Guam (1 Oct 1979 – 1 Oct 1987) Det 6 – Hawaii Tracking Station, Hawaii (1 Oct 1979 – 1 Oct 1987) Det 7 – Sunnyvale AFS (later Onizuka AFS), California (17 Apr 1987 – 30 Sep 1987) (later moved to Los Angeles AFS, California from 30 Sep 1987 until inactivation on 15 Jul 1991) Bases stationed Sunnyvale AFS (later, Onizuka AFS/AFB), California (8 Jul 1977 – 27 Aug 1993) Los Angeles AFS, California (18 Jun 1965 – 8 Jul 1977) Spacecraft operated KH-1/2/3/4 CORONA (1959–1972) Global Positioning System (GPS) Fleet Satellite Communications System (FLTSATCOM) Various satellites of the Space Test Program See also 6594th Test Group National Reconnaissance Office Onizuka Air Force Station References External links Air Force Space Command National Reconnaissance Office National Reconnaissance Office United States Air Force Military units and formations in California