Flare Focus Airmen refuel an Air Force KC-10 and four F-15s during Nexus Dawn over Travis Air Force Base, Calif., April 27, 2021. The exercise is designed to test airmen’s ability to generate, employ and sustain air operations in a simulated combat environment. SHARE: Download: Full Size (0.33 MB) Tags: Air Force, Training, Nexus Dawn Credit: Air Force Senior Airman Maygan Straight VIRIN: 210426-F-DH501-305C.JPG Photo Gallery