In this Nov. 22, 1963 file photo, President John F. Kennedy and first lady Jacqueline Kennedy ride in the backseat of an open limousine on Main Street at
In this Nov. 22, 1963 file photo, President John F. Kennedy and first lady Jacqueline Kennedy ride in the backseat of an open limousine on Main Street at Ervay Street in Dallas as the presidential motorcade approaches Dealey Plaza. Texas Gov. John Connally, and his wife Nellie are seated in the limousine's jump seats. (AP Photo/File)