U.S. Marine Corps Gunnery Sgt. Jedadieah Marshall, a drill instructor with platoon 3009, Lima Company, 3rd Recruit Training Battalion, reads a citation of Marine Lance Cpl. Navarro-Arellano&#39;s duties during a portion of the Crucible at Paige Field on Marine Corps Recruit Depot, Parris Island, S.C., February 1, 2018. The Crucible is a fifty-four hour culminating event that requires recruits to work as a team, and overcome challenges in order to earn the title United States Marine. (U.S. Marine Corps photo by Cpl. Sarah Stegall/Released) - Stock Image