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Cheyenne Mountain Hosts 5K Tunnel Run and Open House
Runners travel a long stretch of dark tunnel through the heart of Cheyenne Mountain Air Force Station during the CMAFS 5k Tunnel Run/Open House May 26, 2016. The event was part of the ongoing 50th anniversary celebration of the “Americas Fortress” becoming fully operational. (U.S. Air Force photo by Staff Sgt. Amber Grimm)

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Photo by: Staff Sgt. Amber Grimm |  VIRIN: 160526-F-CV567-191.JPG

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