Operation Cold Steel 2017
U.S. Army Reserve Sgt. 1st Class Mario Hernandez, 366th Engineer Company, 412th Theater Engineer Command dons his field protective mask while completing blank fire during Operation Cold Steel at Fort McCoy, Wis., April 10, 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)