Mass Casualty BM-13-03
Maj. Douglas Barnes, 51st Logistics Readiness Squadron director of operations, right, helps a role player put on her Mission Oriented Protective Posture gear during a mass casualty exercise scenario during Operational Readiness Exercise Beverly Midnight 13-03 at Osan Air Base, Republic of Korea, August 6, 2013. Airmen don MOPP gear following an attack when contamination is present or suspected, or when the highest level of protection is required. (U.S. Air Force photo/Staff Sgt. Emerson Nuñez)