A Boeing B-17 Flying Fortress flies over Joint Base Andrews, Md., during the 2017 Andrews Air Show: Air and Space Expo Sept. 15, 2017. The three-day event displayed the Air Force’s capabilities through air power with demonstrations that included the U.S. Air Force Thunderbirds, Army Golden Knights, and the U.S. Air Force F-22 Demonstration Team. (U.S. Air Force photo by Senior Airman Delano Scott)