A lizard finds some shade on M2 machine gun ammunition while U.S. Army Reserve Troop List Units qualify during Operation Cold Steel II, hosted by the 79th Theater Sustainment Command, Oct. 26, 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.