U.S. Army Reserve Staff Sgt. Eddie Menjivar, 459th Transportation Company, 377th Theater Sustainment Command, qualifies on the M2 machine gun during Operation Cold Steel II, 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.