The 19th Fighter Squadron (19 FS) is part of the 15th Wing at Joint Base Pearl Harbor-Hickam, Hawaii. The squadron is one of the oldest in the United States Air Force, its origins dating to 14 June 1917, being organized at Kelly Field, Texas. It served overseas in France as part of the American Expeditionary Forces during World War I. The squadron saw combat during World War II, and became part of the Tactical Air Command (TAC) during the Cold War.