Checkered Flag 18-1
U.S. Air Force Airman 1st Class Andrew Alcozer, 3rd Aircraft Maintenance Squadron crew chief, cleans the canopy of a 525th Fighter Squadron F-22 Raptor at Tyndall Air Force Base, Fla., Nov. 7, 2017. Tyndall AFB is the host location for 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)