A U.S. Airman assigned to the 633rd Medical Group places an identification bracelet onto the wrist of a simulated injured patient during a mass casualty exercise l at Langley Air Force Base, Va., March 24, 2016. The exercise took approximately a month to plan to ensure the medical staff was familiar with several different scenarios, such as an aircraft crash. (U.S. Air Force photo by Airman 1st Class Kaylee Dubois)