Agent Clint Hill, who tried to save JFK when he was assassinated in Dallas in 1963, dies at 93
Haunted by what he considered a personal failure, Clint Hill had retired from the Secret Service at the age of 43
Kennedy assassination: Trump opens the files – The unknown role of Greek CIA agent Ioannidis
Shocking revelations expected - Who was the Greek agent who had contacts with the president's assassin and allegedly played a key role on the day of the assassination, but never spoke about his actions
Trump declassifies documents on the assassinations of JFK, Robert Kennedy & Martin Luther King
All three assassinations, in 1963 and two in 1968, shocked the US, while the president's assassination created conspiracy theories about who, how and why it was planned