91st ARS refuel USAF Thunderbirds Published Feb. 28, 2022 By Airman 1st Class Hiram Martinez 6 Air Refueling Wing Public Affairs MACDILL AIR FORCE BASE, Florida. -- U.S. Air Force Airmen from the 91st Air Refueling Squadron complete pre-flight checks at MacDill Air Force Base, Florida, Feb. 22, 2022, before escorting the U.S. Air Force Demonstration Squadron “Thunderbirds” back to Nellis Air Force Base, Nevada. The KC-135 Stratotanker has provided the core aerial refueling capability for the U.S. Air Force and has excelled in this role for more than 60 years. (U.S. Air Force photo by Airman 1st Class Hiram Martinez)