MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines with Headquarters and Headquarters Squadron(H&HS) conduct a base wide clean up at Marine Corps Air Station(MCAS) Yuma, Ariz., March 15, 2019. The base clean up is intended to boost unit morale and ensure the cleanliness of MCAS Yuma. (U.S. Marine Corps photo by Pfc John Hall)