The 91st Air Refueling Squadron is a unit within the United States Air Force. Its primary role involves aerial refueling, allowing for extended flight durations and increased operational range of military aircraft. This squadron operates KC-135R Stratotanker aircraft, which are strategically positioned to provide in-flight refueling support for various U.S. Air Force platforms. The 91st Air Refueling Squadron is part of the Air Mobility Command and is stationed at RAF Mildenhall, England. Its mission is integral to the successful execution of numerous military operations worldwide.