U.S. Air Force Airmen assigned to the 94th Aircraft Maintenance Unit perform maintenance on an F-22 Raptor at Joint Base Langley-Eustis, Va., June 26, 2017. In April, 2017 18 new canvas-toped sun shelters were built for the 1st Fighter Wing to provide shelter for Airmen on the flightline who working on the aircraft. (U.S. Air Force photo/Airman 1st Class Tristan Biese)