Airman 1st Class Ryan Kemp, 92nd Air Refueling Squadron boom operator, refuels an F-22 Raptor from Joint Base Langley-Eustis, Va., while aboard a KC-135 Stratotanker during Red Flag 14-1 Jan. 29, 2014, over the Nevada Test and Training Range. More than 440,000 service members have participated in Red Flag since 1975, including more than 145,000 aircrew members flying more than 385,000 thousand sorties and logging more than 660,000 flight hours. (U.S. Air Force photo/Staff Sgt. Veronica Montes)