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.

A Secret Service agent, he leaped onto the president’s limousine in Dallas in 1963 and was credited with saving the first lady’s life. But he was haunted by his inability to save her husband.