Thunderbolts light up the sky during Checkered Flag 18-1 A U.S. Air Force pilot from Mountain Home Air Force Base, Idaho, performs a pre-flight check on an F-15E Strike Eagle parked on the flightline at Tyndall Air Force Base, Fla., Nov. 9, 2017. Mountain Home Airmen and assets were at Tyndall participating in Checkered Flag 18-1, a large-scale aerial exercise designed to integrate fourth and fifth-generation airframes while providing a platform for maintenance teams to be evaluated. (U.S. Air Force photo by Airman 1st Class Isaiah J. Soliz/Released) SHARE: Download: Full Size (0.96 MB) Credit: Airman 1st Class Isaiah J. Soliz VIRIN: 171109-F-XK019-1023.JPG Photo Gallery