U.S. Marine Corps Sgt. Maj. Delvin R. Smythe, the Marine Corps Air Station (MCAS) Yuma, Ariz., sergeant major, receives awards from Col. Ricardo Martinez, the outgoing commanding officer of MCAS Yuma, and Master Gunnery Sgt. Arthur Parra, the acting sergeant major of MCAS Yuma, during Sgt. Maj. Smythe's retirement ceremony, June 30, 2017. (U.S. Marine Corps photo taken by Lance Cpl. Joel Soriano) - U.S. Marine Corps Sgt. Maj. Delvin R. Smythe, the Marine Corps Air Station (MCAS) Yuma, Ariz., sergeant major, receives awards from Col. Ricardo Martinez, the outgoing commanding officer of MCAS Yuma, and Master Gunnery Sgt. Arthur Parra, the acting sergeant major of MCAS Yuma, during Sgt. Maj. Smythe's retirement ceremony, June 30, 2017. (U.S. Marine Corps photo taken by Lance Cpl. Joel Soriano)