FORT MCCOY, Wis. - U.S. Army Reserve Spc. Maurice Cheeks, medic, 319th Medical Detachment (Minimal Care), treats a casualty mannequin as part of a medical evacuation exercise during Operation Cold Steel at McCoy, Wis., March 15, 2017. Operation Cold Steel is the U.S. Army Reserve's crew-served weapons qualification and validation exercise to ensure that America's Army Reserve units and Soldiers are trained and ready to deploy on short-notice and bring combat-ready and lethal firepower in support of the Army and our joint partners anywhere in the world. (U.S. Army Reserve photo by Staff Sgt. Debralee Best, 84th Training Command)