Air Force Reserve Capt. Shawn Griffin, 315th Aeromedical Evacuation Squadron flight nurse, examines a simulated battlefield patient during an operational readiness exercise at North Auxiliary Airfield, S.C., Nov. 17, 2018. The exercise provided the 315th Operations Group with hands-on training in a variety of airlift and aeromedical evacuation tactics during simulated combat events. (U.S. Air Force photo by Staff Sgt. Andrew Fox)