Loading a Machine Gun An Army reservist loads an M240B machine gun for zero and qualification during Operation Cold Steel at Fort McCoy, Wis., March 13, 2017. Operation Cold Steel is the Army Reserve's crew-served weapons qualification and validation exercise to ensure that units and soldiers are trained and ready to deploy on short-notice. Army Reserve photo by Staff Sgt. Debralee Best SHARE: Download: Full Size (1.93 MB) Tags: reserves, Soldiers, Army, training Credit: Staff Sgt. Debralee Best VIRIN: 170313-A-FW423-049A.JPG Photo Gallery