U.S. Marine Corps Gen. James F. Amos, left, the commandant of the Marine Corps, administers the oath of enlistment to Sgt. Dominic Sharpsteensurina, an assault section leader with Charlie Company, 1st Battalion, 7th Marine Regiment, after his meritorious promotion ceremony at Camp Leatherneck, Helmand province, Afghanistan, Sept. 6, 2014. Amos promoted Sharpsteensurina to the rank of sergeant during his final visit to Helmand province.