U.S. Air Force Maj. Michael Harrison, 100th Air Refueling Wing Inspector General director of inspections, flies a KC-135 Stratotanker over Scotland to refuel aircraft participating in exercise Joint Warrior 19-1, April 4, 2019. Exercise Joint Warrior is a biannual, U.K.-led multinational exercise and one of largest NATO exercises in Europe, involving 13 countries. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)