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The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947.
USA 171 is an American geostationary military spacecraft. It is reported to be an ORION-class craft belonging to the National Reconnaissance Office.
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Launch Success 6
Consecutive Success 4
Maiden Flight 1997-10-15
Launch Failures 1