U.S. Air Force Staff Sgt. Zachary Dunn, 192nd Fighter Wing low observable aircraft structures technician, removes radar absorbent material from an F-22 Raptor during Red Flag 17-1 at Nellis Air Force Base, Nev., Feb. 3, 2017. Pilot’s missions at Red Flag depend on LO enabled partly by the radar absorbent material. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)