U.S. Air Force Maj. Michael Goodwin, 351st Air Refueling Squadron aircraft commander, gives a preflight brief to aircrew at RAF Mildenhall, England, prior to flying a KC-135 Stratotanker in support of Exercise Frisian Flag, April 10, 2019. The exercise included more than 50 aircraft from six different nations for the purpose of training joint and combined air operations in a broad spectrum of scenarios. (U.S. Air Force photo by Senior Airman Luke Milano)