U.S. Air Force Senior Master Sgt. David Williams, 366th Security Forces Squadron operations superintendent, poses in a helicopter prior to a battlefield circulation, during his last deployment to Kandahar Airfield, Afghanistan. Williams was assigned as the 820th Base Defense Group security superintendent, where he streamlined International Security Assistance Force manpower requirements. He was also the battle captain managing joint force responses to indirect fire and improvised explosive device attacks. (Courtesy photo)
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