Vigilant Shield exercise at CMAFS
CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. -- Navy Capt. Brenda BradleyDavila, NORAD/NORTHCOM command chaplain, and Tech. Sgt. Lerinda Carle, 21st Medical Operations Squadron, perform simulated CPR on Staff Sgt. Alex Gaviria, 721st Communications Squadron, during the Vigilant Shield Exercise at Cheyenne Mountain AFS. This realistic training was part of the Vigilant Shield exercise designed to keep Cheyenne Mountain personnel prepared for a real world incident. (U.S. Air Force photo/Craig Denton)