Clint Hill, the Secret Service agent who jumped onto the back of the limousine moments after shots rang out in Dealy Plaza. Those who knew him tell CBS News Texas that Hill never really overcame the guilt he felt on that tragic day.

Clint Hill, who was seen in film footage of the assassination scrambling across the back of the presidential limousine, died at his home. He was 93.

The John F. Kennedy Presidential Library and Museum is paying tribute to Clint Hill, the secret service agent who famously jumped onto President Kennedy’s motorcade after the president was shot and killed in Dallas in 1963.