Two U.S. Air Force F-16 Fighting Falcons taxi on the runway at Prince Sultan Air Base, Kingdom of Saudi Arabia, after participating in a combined counter-unmanned aerial systems training operation with Royal Saudi aircraft, July 29, 2021. Protecting U.S. and allied forces against UAS continues to be a top priority in the U.S. Central Command theater of operations. (U.S. Air Force photo by Senior Airman Samuel Earick)