Senior Airman Breeann Kyle, a flight technician in the 36th Aeromedical Evacuation Squadron, Pope Army Airfield, N.C., dons her oxygen mask to prepare for the simulated mass casualty exercise Jan. 24, 2013, at the Aeromedical Evacuation Training Unit, Pope Army Airfield, N.C. The AEFTU provides hands-on training for aeromedical evacuations. (U.S. Army photo/Spc. Melissa C. Parrish)