Crew-served primary marksmanship instruction
U.S. Army Reserve Sgt. Michael Rivera, Headquarters and Headquarters Detachment, 143rd Expeditionary Sustainment Command, 377th Theater Sustainment Command, adjusts a traverse and elevation mechanism for an M249 machine gun while participating in primary marksmanship instruction during Operation Cold Steel II, hosted by the 79th Theater Sustainment Command at Fort Hunter Liggett, Calif. Operation Cold Steel is America's Army Reserve's crew-served weapon qualification and validation exercise to ensure units and Soldiers are trained and ready to deploy on short notice as part of Ready Force X, bringing combat-ready and lethal firepower in support of the Army and joint partners anywhere in the world. (U.S. Army Reserve photo by Staff Sgt. Debralee Best/TF Cold Steel II)