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21st Space Operations Squadron
The 21st Space Operations Squadron (21 SOPS) is a satellite control unit of the 50th Network Operations Group of the United States Air Force located at Vandenberg Air Force Base, California. It formerly operated Onizuka Air Force Station.
==Mission==
The 21st Space Operations Squadron, a unit of the 50th Network Operations Group, 50th Space Wing, Schriever Air Force Base, Colo., is a tenant organization at Vandenberg AFB, Calif. The squadron and mission transferred to Vandenberg AFB on July 29, 2010, due to the closure of Onizuka Air Force Station, Calif. The squadron operates the Ellison Onizuka Satellite Operations Facility at Vandenberg AFB, continuing the legacy of Col. Ellison Onizuka, an Air Force astronaut aboard the Space Shuttle Challenger that exploded shortly after lift-off on Jan. 28, 1986.
The mission of the 21st Space Operations Squadron is to plan and conduct specialized communications for a wide spectrum of Department of Defense, allied, civilian and national space systems. The squadron monitors, maintains and updates status of the $6.2 billion Air Force Satellite Control Network resources, providing configuration and readiness condition of controlled resources. The squadron operates four AFSCN remote tracking stations performing on-orbit satellite tracking, telemetry, commanding, mission data retrieval operations, pre-launch satellite test and checkout, as well as direct operations launch support. Additionally, the squadron is responsible for the operations and maintenance support of the Global Positioning System ground antennas and monitor stations at Diego Garcia Tracking Station, Kaena Point Tracking Station, and the Kwajalein Atoll, Republic of the Marshall Islands.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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