Lt. Cmdr. Tim Murphy, psychologist with the Navy Reserve Medical Service Corps at Walter Reed National Military Medical Center at Bethesda, sprays fake blood on the bandages of a Civil Air Patrol Cadet as part of preparation for a National Disaster Medical System Exercise at the Pittsburgh International Airport Air Reserve Station, July 12, 2014. (U.S. Air Force photo by Senior Airman Marjorie A. Bowlden)
Senior Airman Marjorie A. Bowlden
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