The 116th Air Refueling Squadron (116 ARS) is a unit of the Washington Air National Guard 141st Air Refueling Wing located at Fairchild Air Force Base, Spokane, Washington. The 116th is equipped with the KC-135R Stratotanker and RC-26B Metroliner. The squadron is a descendant organization of the World War I 116th Aero Squadron, established on 28 August 1917. It was reformed on 6 August 1924, as the 116th Observation Squadron, and is one of the 29 original National Guard Observation Squadrons of the United States Army National Guard formed before World War II.