U.S. Air Force Airmen with the 1st Aircraft Maintenance Squadron taxi F-22 Raptors at Nellis Air Force Base, Nev., Aug. 10, 2017. The aircraft are assigned to Joint Base Langley-Eustis Air Force Base, Va.’s, 1st Fighter Wing and will conduct air combat training sorties with various aircraft during Red Flag 17-4. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

A U.S. Air Force F-22 Raptor from the 94th Fighter Squadron from Joint Base Langley-Eustis, Va., arrives at Red Flag 17-4 at Nellis Air Force Base, Nev., Aug. 10, 2017. Red Flag is a realistic combat training exercise involving the air, space and cyber forces of the United States and its allies. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

A U.S. Air Force Airman crew chief with the 1st Aircraft Maintenance Squadron marshalls an F-22 Raptor at Red Flag 17-4, Nellis Air Force Base, Nev., Aug. 10, 2017. Red Flag is a realistic combat training exercise involving the air, space and cyber forces of the United States and its allies. (U.S. Air Force Photo/Staff Sgt. Carlin Leslie)

U.S. Air Force F-22 Raptors from 94th Fighter Squadron landed at Nellis Air Force Base, Nev., Aug. 10, 2017. The aircraft are assigned to the 1st Fighter Wing from Joint Base Langley-Eustis Air Force Base, Va., and will conduct air combat training sorties with various aircraft during Red Flag 17-4, running from Aug. 14 to 25. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

A U.S. Air Force KC-10 Extender from the 305th Air Mobility Wing, McGuire Air Force Base, N.J, arrives at Nellis AFB, Nev. Aug. 10, 2017. The KC-10 is carrying main body Airmen from the 94th Fighter Squadron in support of Red Flag 17-4. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

U.S. Airmen from the 1st Fighter Wing and 192nd Fighter Wing from Joint Base Langley-Eustis, Va. arrive at Nellis Air Force Base, Nev., to take part in Red Flag 17-4, Aug. 10, 2017. Red Flag is a realistic combat training exercise involving the air, space and cyber forces of the United States and its allies that will run from August 14-25, 2017. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

U.S. Airmen from the 1st Fighter Wing and 192nd Fighter Wing from Joint Base Langley-Eustis, Va. arrive at Nellis Air Force Base, Nev., to take part in Red Flag 17-4, Aug.10, 2017. Red Flag is a realistic combat training exercise involving the air, space and cyber forces of the United States and its allies that will run from August 14 to 25, 2017. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)

U.S. Airmen with the 1st Aircraft Maintenance Squadron complete post-flight checks after the U.S. Air Force F-22 Raptors from 94th Fighter Squadron landed at Nellis Air Force Base, Nev., Aug. 10, 2017. The aircraft are assigned to the 1st Fighter Wing from Joint Base Langley-Eustis Air Force Base, Va., and will conduct air combat training sorties with various aircraft during Red Flag 17-4. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)