U.S. Marine Corps Sgt. Maj. Delvin R. Smythe, the Marine Corps Air Station (MCAS) Yuma, Ariz., segeant major, transfers the sword to Master Gunnery Sgt. Arthur Parra, who will serve as an acting sergeant major, during Sgt. Maj. Smythe's retirement ceremony, June 30, 2017. (U.S. Marine Corps photo taken by Lance Cpl. Christian Cachola)