Clint Hill is a former United States Secret Service agent who was in the presidential motorcade during the John F. Kennedy assassination. Hill remained assigned to Mrs. Kennedy and the children until after the 1964 presidential election. He then was assigned to President Lyndon B. Johnson at the White House.  In 1967, when Johnson was still in office, he became the Special Agent in Charge of Presidential protection.  When Richard Nixon came into office, he moved over to be the SAIC of the Vice Presidential Protective Division.  In 1972, Hill as promoted to the position of Assistant Director of the Secret Service, responsible for all protective forces. He retired in 1975.