Although few may recognize his name, the footage of Hill leaping onto the back of JFK's car, provided some of the most indelible images of Kennedy's assassination.

Passengers onboard a Virgin Atlantic flight flew for eight hours to arrive in the same country from where it took off from.

Footage and transcripts of an iconic Beatles press conference in 1964 proved how chaotic Beatlemania was and how wittily the band handled it.

Clint Hill scrambled to protect Kennedy and his young wife, Jacqueline, as they enjoyed an open motorcade tour through Dallas.