U.S. Army Reserve Spc. Zachary Rumo, 366th Engineer Company, 412th Theater Engineer Command, completes basic live fire with an M2 .50 caliber machine gun during Operation Cold Steel at Fort McCoy, Wis., April 20, 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)