Clint Hill, the Secret Service agent who ran into the line of fire to shield President John F. Kennedy and the first lady in Dallas on November 22, 1963, died Friday. He was 93 years old.

His attempt to shield the Kennedys from further harm became one of the most iconic moments in U.S. history. Despite receiving commendations for his bravery, Hill carried guilt for

Clint Hill, the former Secret Service agent who shielded first lady Jacqueline Kennedy from gunfire during the assassination of President John F. Kennedy in 1963, has died, the agency said Monday.

I was the only one who had a chance to do anything,” Clint Hill said. “The way everything developed, the way all the other agents were positioned, I was the only one who had a chance to get to the car and do anything.

Clint Hill, the Secret Service agent who leaped onto the back of President John F. Kennedy’s limousine after the president was shot, then was forced to retire early because he remained haunted by memories of the assassination,

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.