The 91st Air Refueling Squadron is a unit of the United States Air Force, falling under the operational control of the U.S. Air Force's Air Mobility Command. Its primary function is strategic and tactical air refueling, enabling continuous flight for various aircraft over extended ranges. Established in 1942 at Wendover Field, Utah, the squadron has a rich history of service, participating in significant operations such as the Berlin Airlift, the Korean War, and numerous missions during the Cold War era. Today, it operates KC-135R Stratotankers from its base at McConnell Air Force Base, Kansas, playing a crucial role in supporting global airpower projection.