The 2017 Andrews Air Show: Air and Space Expo
U.S. Air Force Thunderbirds fly in a delta formation over Joint Base Andrews, Md., during the 2017 Andrews Air Show: Air and Space Expo Sept. 15, 2017. For 62 years, the Thunderbirds have represented the epitome of Air Force precision and dedication. (U.S. Air Force photo by Senior Airman Delano Scott)