The 43d Fighter Squadron (43 FS) is part of the 325th Fighter Wing at Tyndall Air Force Base, Florida. It conducts advanced fighter training for F-22 Raptor pilots. The squadron is one of the oldest in the United States Air Force, its origins dating to 13 June 1917, being organized at Kelly Field, Texas. The squadron deployed to England as part of the American Expeditionary Force during World War I. The squadron saw combat during World War II, served in the Vietnam War and later became part of the Alaskan Air Command (AAC) during the Cold War.