Constitution Flyover The Thunderbirds, the Air Force’s flight demonstration squadron, fly over the USS Constitution in Boston Harbor during the Defense Department’s salute to the Great Cities of the American Revolution, July 4, 2020. SHARE IMAGE: Download Image: Full Size (3.02 MB) Tags: Observances, Air Force Photo By: Todd Maki, Air Force VIRIN: 200704-F-TG847-060.JPG Photo Gallery