The 37th Bomb Squadron is part of the 28th Bomb Wing at Ellsworth Air Force Base, South Dakota. It operates the Rockwell B-1 Lancer aircraft providing strategic bombing capability. The squadron itself is one of the oldest in the United States Air Force, its origins dating to 13 June 1917, when the 37th Aero Squadron was organized at Kelly Field, Texas. The squadron deployed to France as part of the American Expeditionary Force during WW-I and served as a training unit until returning to the US for demobilization. It was active in the interwar years at Langley Field, Virginia as a pursuit and attack squadron.