Royal Air Force Gp Capt Joanne Campbell, RAF College Cranwell station commander, left, and MAcr Marcus Burton, weapons systems operator senior instructor, fly a KC-135 Stratotanker aircraft simulator at RAF Mildenhall, England, May 5, 2021. Campbell and Burton visited the base to learn about U.S. Air Forces in Europe and Air Forces Africa's only permanent air refueling wing. (U.S. Air Force photo by Senior Airman Joseph Barron)