U.S. Army Reserve Soldier Spc. Andrew Kostelac, combat

U.S. Army Reserve Soldier Spc. Andrew Kostelac, combat medic with 444th Medical Company, based in West Virginia perform simulated medical training in a field litter ambulance during Operation Cold Steel II, hosted by the 377th Theater Sustainment Command at Fort Knox, Ky., March 17, 2018. Operation Cold Steel is the U.S. Army Reserve’s crew-served weapons qualification and validation exercise to ensure America’s Army Reserve units and Soldiers are trained and ready to deploy on short-notice as part of Ready Force X 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 Spc. Noel Williams/U.S. Army Reserve Command)