U.S. Air Force C-17 Globemaster IIIs assigned to the 58th Airlift Squadron taxi to the runway during a large formation exercise, May 21, 2020 at Altus Air Force Base (AFB), Oklahoma. The exercise simulated a mass evacuation of 24 aircraft on Altus AFB in case of severe weather incidents or natural disasters. (U.S. Air Force photo by Airman 1st Class Breanna Klemm)