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Cheyenne Mountain Hosts 5K Tunnel Run and Open House
Runners trade the sun for the cool dark at the south entrance of the tunnel into Cheyenne Mountain Air Force Station during the CMAFS 5k Tunnel Run/Open House May 26, 2016. Since its inception during the Cold War through the war on terrorism, Cheyenne Mountain has remained critical to the defense mission providing command and control for the nation since 1966. (U.S. Air Force photo by Staff Sgt. Amber Grimm)

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Photo by: Staff Sgt. Amber Grimm |  VIRIN: 160526-F-CV567-108.JPG

Peterson SFB Schriever SFBCheyenne Mountain SFSThule AB New Boston SFS Kaena Point SFS Maui