Event:
U.S. performs nuclear test at Nevada Test Site
More Notable Events on September 21:
1996 John F. Kennedy, Jr. marries Caroline Bisset
1981 Sandra Day O'Conner becomes 1st female Supreme Court Justice
1954 1st nuclear submarine, USS Nautilus, commissioned
1915 CH Chubb buys Stonehenge for 6,600 pounds
1837 Charles Tiffany founded his jewelry and china stores
