Royal Saudi Air Force Staff Sgt. Hassan, crew chief, communicates via headset with pilots before a training mission during Red Flag 12-2 at Nellis Air Force Base, Nev. (U.S. Air Force photo
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File:U.S. Air Force Senior Airman Alexander Orchard, a crew chief with the 57th Aircraft Maintenance Squadron, communicates via headset to a F-35A Lightning II aircraft pilot April 2, 2013, at Nellis Air