Ken Mattingly, American astronaut (born 1936)

Thomas Kenneth Mattingly II was an American aviator, aeronautical engineer, test pilot, rear admiral in the United States Navy, and astronaut who flew on Apollo 16 and Space Shuttle STS-4 and STS-51-C missions.

October 31 is the 304th day of the year in the Gregorian calendar; 61 days remain until the end of the year.