Officers assigned to the 641st Regional Support Group place bandages on a "wounded" Soldier during a casualty evacuation training event held Jan. 24, 2015, at Patrick Air Force, Fla. Casualty care was one of six physical, mental and ethical challenges faced by scores of Army Reserve officers (and one active duty Air Force officer) participating in Operation Responsive Sentinel, a multi-echelon training exercise designed to test the command’s readiness and capabilities from the RSG to the individual Soldier level. (U.S. Army Photo by Army Sgt. John L. Carkeet IV, 143rd Sustainment Command (Expeditionary))