At his graveside in Arlington National Cemetery, as well as in Dallas and Boston, American pay their respects to President John F. Kennedy, who was assassinated Nov. 22, 1963.
Nov. 22, 2013 Clint Hill, a former Secret Service agent who was assigned to first lady Jacqueline Kennedy, was in the presidential motorcade Nov. 22, 1963, when President John F. Kennedy was assassinated in Dallas. Here, he joins Fort Worth Mayor Betsy Price (R) and Rep. Roger Williams (R-Tex.) as they place a wreath in remembrance at the JFK Tribute in Fort Worth, which the Kennedys visited the day before the assassination. Tom Pennington/Getty Images Buy Photo