Staff Sgt. Nicholas DaCunha, 90th Security Forces Squadron training and validations supervisor, runs to the next checkpoint during the annual Crow Creek Challenge at F.E. Warren Air Force Base, Wyo., Aug. 26, 2016. In addition to the individual events, defenders carried a 35-pound ruck sack on the six-mile challenge course. The 22nd CCC tested defenders’ mission capabilities as a team in a physically and mentally stressful environment. (U.S. Air Force photo by Staff Sgt. Christopher Ruano)
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