An F-22 Raptor assigned to the 27th Fighter Squadron at Joint Base Langley-Eustis, Va., receives fuel during Red Flag 18-1 over the Nevada Test and Training Range, Feb. 7, 2018. Red Flag helps pilots train for real-time war scenarios and tests their readiness for future conflicts. (U.S. Air Force photo by Airman 1st Class Andrew D. Sarver)