The U.S. Air Force is redesigning its helmet for fixed-wing aircrews for the first time in nearly 40 years. (Courtesy: U.S. Air Force/Staff Sgt. Dana Tourtellotte) The U.S. Air Force says its ...

A retired NASA flight surgeon said he saw footage of a 20-foot-wide flying saucer emblazoned with the US Air Force logo performing deft maneuvers in a military hangar more than 30 years ago, according ...