MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines with Headquarters & Headquarters Squadron (H&HS) conduct a base wide clean up at Marine Corps Air Station (MCAS) Yuma, Ariz., May 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 Cpl. Sabrina Candiaflores)