Assassination of John F. Kennedy Service follow-up car and its driver's left arm, as well on the motorcycle officers who were riding on both sides of the President just behind his vehicle. Secret Service Special Agent Clint Hill was riding on the left front running board of the follow-up car, which was immediately behind the Presidential limousine. Hill testified that he heard one shot, then, as documented in other films and concurrent with Zapruder frame 308, he jumped off into Elm Street and ran forward to try to get on the limousine and protect the President; Hill testified to the Warren Commission that after he
SS-100-X SS-100-X SS-100-X was the U.S. Secret Service code name for the presidential limousine originally used by the 35th President of the United States, John F. Kennedy. The limousine is the car in which Kennedy and First Lady Jacqueline Kennedy were passengers when the President was assassinated in Dallas, Texas on November 22, 1963. Following Kennedy's assassination, the car received significant armor plating and a bullet-proof hardtop and its navy blue exterior was painted black. It resumed its role as a presidential limousine for President Lyndon B. Johnson until 1967 and later remained in service until 1978, when it was sent