MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines with Headquarters and Headquarters Squadron (H&HS), S-1, conduct daily operations at Marine Corps Air Station Yuma Ariz., June 24, 2019. The mission of S-1 is to provide the Marines of H&HS with the highest quality and timely administrative support in the Marine Corps. (U.S. Marine Corps photo by Cpl. Sabrina Candiaflores)