William John "Pete" Knight (November 18, 1929 – May 7, 2004) (Col, USAF) was an American aeronautical engineer, politician, Vietnam War combat pilot, test pilot, and astronaut. He was one of twelve pilots who flew the North American X-15, an experimental spaceplanejointly operated by the U.S. Air Force and NASA. He was also selected for participation in the X-20 Dyna-Soar program.. ​ ​He had more than his share of eventful flights in the X-15. While climbing through 107,000 feet at Mach 4.17 on June 29, 1967, he suffered a total electrical failure and all onboard systems shut down. After reaching a maximum altitude of 173,000 feet, he calmly set up a visual approach and, resorting to old-fashioned "seat-of-the-pants" flying, he glided down to a safe emergency landing at Mud Lake, Nevada. For his remarkable feat of airmanship that day, he earned a Distinguished Flying Cross.