USA-169
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USA-169 (also known as Milstar-2 4) is an American Communications satellite which was operated by the United States Air Force. Launched in April 2003, it is the last Milstar-2 communications satellite.
Overview

Milstar-2 is a Communications satellite which provided tactical communication services to US Armed Force replaced the Milstar-1 satellite and Advanced Extremely High Frequency (AEHF) is the Successor of Milstar-2 Satellites.