This happened today, September 21
1954 – 1st nuclear submarine, USS Nautilus, commissioned under Commander Eugene P. Wilkinson
1957 – “Perry Mason” with Raymond Burr premieres on CBS-TV
1958 – 1st airplane flight exceeding 1200 hours, lands, Dallas Texas
1966 – Jimmy Hendrix changes spelling of his name to Jimi
1970 – “Monday Night Football” premieres on ABC – Browns 31, Jets 21