In this Nov. 22, 1963 file photo, President John F. Kennedy's motorcade travels through Dallas.
President John Kennedy and first lady Jacqueline Kennedy, followed by Texas Gov. John Connally and wife Nellie, descend the steps of Air Force One at Dallas Love Field on Nov. 22, 1963. Vice President Lyndon Johnson, left, and other dignitaries wait to greet the Kennedys.
The Kennedys receive an enthusiastic welcome in downtown Dallas on Nov. 22, 1963. Moments before the shots rang out, Nellie Connally, wife of the Texas governor, turned to John Kennedy and said, "Mr. President, you can't say Dallas doesn't love you." The man riding on the rear of the limousine is Secret Service agent Clint Hill.
AP Wirephoto operator-photographer J.W. "Ike" Altgens is shown at far right, at Dealey Plaza in Dallas, Tex., Nov. 22, 1963, as shots were fired at President Kennedy's motorcade. Witnesses Bill Gail Newman shield their children on the ground.
Twenty-seven people crowded into Air Force One's stateroom to witness Vice President Lyndon Johnsonís swearing in, 2 hours 8 minutes after President Kennedy was shot in downtown Dallas. Lady Bird Johnson stood on Johnsonís right, a dazed-looking first lady Jacqueline Kennedy stood on his left as U.S. District Court Judge Sarah Hughes delivered the oath of office in this Nov. 22, 1963, photo by White House photographer Cecil Stoughton.
Her stockings and dress soiled, widowed first lady Jacqueline Kennedy reaches for the door of the ambulance carrying the body of her slain husband at Andrews Air Force Base, Md., on Nov. 22, 1963. The late presiden's brother, Attorney General Robert Kennedy, accompanies her at right.
In this Friday, Nov. 22, 1963 file photo, Jacqueline Kennedy, with bloodstains on her clothes, holds hands with her brother-in-law, Attorney General Robert Kennedy, as the coffin carrying the body of President John F. Kennedy is placed in an ambulance after arriving at Andrews Air Force Base, Md. near Washington. President Kennedy was assassinated earlier that afternoon in Dallas.
In this Friday, Nov. 22, 1963 file photo, women burst into tears outside Parkland Hospital upon hearing that President John F. Kennedy died from a shooting while riding in a motorcade in Dallas.