Fifty years ago on July 16, 1969 astronauts Neil Armstrong, Edwin "Buzz" Aldrin and Michael Collins blasted off into space towards the moon fulfilling President John F. Kennedy's Moonshot. Historian Douglas Brinkley discusses the significance of President Kennedy's ambitious goal of landing a man on the moon and returning him safely by the end of the decade, accelerating the space race with the Soviet Union in the midst of the Cold War. Two of Apollo 11's flight directors tell us how even they thought JFK's goal was "semi-crazy." And hear what the three astronauts told CBS Evening News anchor Walter Cronkite and other reporters two days before liftoff.