U.S. Air Force Senior Airman Joshua Moon, 192nd Maintenance Squadron low observerable structural maintenance technician, masks areas on a U.S. Air Force F-22 Raptor in need of repair at Joint Base Langley-Eustis, Va., Feb. 14, 2017. Low observable maintainers are responsible for repairing, modifying and fabricating stealth components of the F-22. (U.S. Air Force photo/Senior Airman Areca T. Bell)