The 197th Fighter Squadron ‘Copperheads’ is a unit of the Arizona Air National Guard located at the Sky Harbor Air National Guard Base in Phoenix Arizona. Following their federalization in 1951 to support the ongoing Korean War, the 197th was equipped with F-84B Thunderjets and used to train pilots for the conflict, with some Copperhead crews heading overseas to fight in the war. Released in 1952, the Squadron was remanded back to the State of Arizona to a new base at Sky Harbor, where it flies the F-51 ‘Mustang’ fighter for the Air Defense Mission of the greater Phoenix Area.