U.S. Air Force KC-135 Stratotankers, C-17 Globemaster IIIs and KC-46 Pegasus aircraft taxi to the runway at Altus Air Force Base, Oklahoma, during a large formation exercise, May 21, 2020. During the exercise, a total of ten KC-135s, ten C-17s and four KC-46s took off from the base. (U.S Air Force photo by Tech. Sgt. Kenneth W. Norman)