U.S. Airmen assigned to the 633rd Medical Group prepare a casualty for transport during a mass casualty exercise at Langley Air Force Base, Va., March 24, 2016. Approximately 600 medical personnel participated in the exercise in preparation for the AirPower over Hampton Roads Open House, April 22-24th.(U.S. Air Force photo by Airman 1st Class Kaylee Dubois)