AERIAL ARCH The U.S. Air Force Aerial Demonstration Squadron known as the Thunderbirds demonstrates F-16 Fighting Falcon acrobatic maneuvers on Eglin Air Force Base, Fla., April 11, 2010. The Thunderbirds headlined Eglin's 75th Air Show with more than 140,000 spectators in attendance. SHARE IMAGE: Download Image: Full Size (0.05 MB) Photo By: VIRIN: 916713-Q-RPU73-075.jpg Photo Gallery