U.S. Air Force Master Sgt. Joel Bradley, 351st Air Refueling Squadron boom operator, prepares to refuel aircraft from a KC-135 Stratotanker assigned to the 100th Air Refueling Wing over the Black Sea, July 22, 2020. Operating within the Black Sea enhances the interoperability of U.S. forces across all domains with credible forces to assure, deter and defend in an increasingly complex security environment. (U.S. Air Force photo by Senior Airman Eugene Oliver)