A U.S. Army Reserve Soldier with 327th Engineer Company, 416th Theater Engineer Command, qualifies with the MK-19 automatic grenade launcher during Operation Cold Steel at Fort McCoy, Wis., March 13, 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.