U.S. Army Reserve Spc. Justin Martinez, paralegal specialist, fires an M240B machine gun on the Engagement Skills Trainer as Staff Sgt. Dorian Yeager, water treatment specialist, both with the 382nd Combat Sustainment Support Battalion, trains as an assistant gunner during Operation Cold Steel II, hosted by the 79th Theater Sustainment Command at Fort Hunter Liggett, Calif., Oct. 14, 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 photo by Sgt. Heather Doppke/79th Theater Sustainment Command)