Senior Airman Tyler Johnson, 51st Security Forces Squadron, pulls his wounded wingman to safety after injuring his leg on a simulated unexploded ordinance event, March 20, 2012, during BM 12-01. Osan Airmen are give a number of scenarios to test their ability to defend the base and conduct daily operations during a heightened state of readiness. (U.S. Air Force photo/Staff Sgt. Craig R. Cisek)

Tech. Sgt. Kevin Robinson, 51st Security Forces Squadron, calls in injury information to his leadership, following a simulated attack against Osan Air Base, March 20, 2012. Team Osan Airmen are participating in operational readiness exercise Beverly Midnight 12-01. (U.S. Air Force photo/Staff Sgt. Craig R. Cisek)

Staff Sgt. Jay Rivera, 51st Security Forces Squadron, provides self-aid and buddy care by elevating his wingman’s wounded leg, during operational readiness exercise Beverly Midnight 12-01, March 20, 2012. This scenario tested the readiness of Osan’s first responders as well as the 51st Fighter Wing’s abilities to work as a unit to accomplish the mission during the heightened state of readiness. (U.S. Air Force photo/Staff Sgt. Craig R. Cisek)