Gen Mark Kelly, Commander of Air Combat Command, prepares for his F-15EX qualification flight in tail “002” after completing the requisite academic and simulator training at Eglin Air Force Base, Fla, Sept. 1, 2021. A fighter pilot with over 6,000 hours in multiple aircraft, Gen Kelly is now one of two pilots in the world who’ve flown both the F-15EX and F-35A. (U.S. Air Force photo by 1st Lt Lindsey Heflin)