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CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. – First Lt. Miles Tran, simulated active shooter, hides behind Staff Sgt. Timothy Buss, simulated hostage, while El Paso County Sheriff’s SWAT Team breeches a 24/7/365 systems operations center during a joint exercise, Oct. 22, 2015. The active shooter turned hostage exercise scenario was intended to evaluate the partnership between Cheyenne Mountain Air Force Station and El Paso County Sheriff’s Department in a training environment in preparation for potential real-world situations. (U.S. Air Force photo by Senior Airman Tiffany DeNault)

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