MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marine Corps Lt.Col. James C. Paxton and Sgt.Maj. Fabian Casillas the commanding officer and sergeant major of Marine Corps Air Station (MCAS) Yuma's Headquarters & Headquarters Squadron (H&HS) welcome the new Marines and Sailors assigned to H&HS during a Welcome Aboard brief at MCAS Yuma, Ariz., June 12, 2019. The H&HS "Guardians" are responsible for all day-to- day operations on the air station, with approximately 800 Marines and Sailors are assigned to the Squadron, as well as around 1,200 civilians who work on the air station. (U.S. Marine Corps photo by Lance Cpl. John Hall)