U.S. Army Staff Sgt. Scott Graham, a medic with the 214th Aviation Regiment Air Ambulance, moves to extract a patient during a medical evacuation mission in support of Exercise Vibrant Response 13 at Camp Atterbury, Ind., July 31, 2012. Joint Task Force-Civil Support and the Response Force responded to a simulated five kiloton nuclear device that was detonated in a major U.S. city. (Official DOD photo by U.S. Air Force Staff Sgt. Ashley Reed/Released)