A former NASA flight surgeon has spoken out for the first time about a classified sighting he claims to have witnessed more than 30 years ago. Dr. Gregory Rogers, who served as NASA's Chief Flight Surgeon and a U.S. Air Force major, revealed to the Daily Mail that in 1992 he viewed security footage of what he described as a 20-foot "flying saucer" inside a Cape Canaveral hangar. Rogers said he kept quiet for over three decades but decided to come forward following his recent retirement from the Department of Defense. He said the craft he observed appeared seamless, with no visible rivets or seams. He was shown the footage by another Air Force major who approached him unprompted. The major locked a room and displayed a video feed showing the saucer-shaped object levitating. The craft was surrounded by personnel in lab coats and hazmat suits. The craft tilted in a way that indicated it did not rely on traditional propulsion methods, as there were no visible jets or propellers. "All of a sudden it just lifted up, as smooth as could be," Rogers said. "It rotated clockwise, then counterclockwise, and tilted 45 degrees while hovering." The vehicle bore "U.S. Air Force" markings, which Rogers found startling. "I'm thinking, this is ours? Someone had to design and manufacture the vehicle I saw on that video." Now retired, Rogers has joined the board of the International UFO Bureau (IUFOB), a nonprofit that investigates unidentified aerial phenomena.