Demonstration Formation Pilots with the Thunderbirds, the Air Force's air demonstration squadron, perform during Airfest 2016: Thunder Over the Empire at March Air Reserve Base, Calif., April 17, 2016. Air Force photo by Tech. Sgt. Christopher Boitz SHARE IMAGE: Download Image: Full Size (0.4 MB) Photo By: Tech. Sgt. Christopher Boitz VIRIN: 160417-F-HA566-247.JPG Photo Gallery