FORT WORTH, TX - NOVEMBER 22:  Former U.S. Secret Service Agent Clint Hill, who was assigned to First Lady Jacqueline Kennedy and was in the presidential motorcade during the assassination of U.S. President Kennedy, talks to the media outside the JFK Tribute on November 22, 2013 in Fort Worth, Texas. People visited the JFK Tribute on the 50th anniversary of the assassination of U.S. President John F. Kennedy as he rode in a Presidential motorcade through Dealey Plaza in Dallas, Texas.  (Photo by Tom Pennington/Getty Images)