There are reasons presidents from FDR to JFK lived before 11/22/63 having nothing to do with plain dumb luck- multi story building rooftops were normally guarded (see my third book), as had been the case in Tampa on 11/18/63, the longest domestic motorcade Kennedy ever undertook, far longer than Dallas (sometimes even a helicopter was used, as was the case in San Antonio 11/21/63, Nashville in May, Chicago in March, etc); many motorcycles normally flanked his limousine in a wedge formation; press photographers flatbed trucks ran in front of the limo; the top was used in one third of his motorcades, often in good weather; military and or police lined the streets and faced the crowds; plainclothes detectives intermingled in the crowds themselves; a military aide very often rode in between the driver and the agent in charge; Behn or Boring always accompanied the president on non D.C. trips (Dallas had third-stringer Kellerman); one of JFK’s drivers, Tom Shipman, died of an alleged heart attack at Camp David on 10/14/63, allowing the very inept Greer to look back twice, disobey a direct order, training and common sense to swerve the car/ get out of there; good protective intelligence from PRS would have thwarted any threats in the making- there were 6 pages of threats in Tampa alone, yet we are expected to believe that no one wished ill of JFK in “nut country”, as he termed it (even Kellerman testified that this was unusual). Secret Service protocols in place for 1963 demonstrate that the agency failed horrendously- even Posner, Bugliosi, the WC and the HSCA agree. My four books (three on the Secret Service) are heavily documented and based on many years of research and original interviews with actual agents, White House aides, etc. Finally, while agents weren’t always on the back of the limo, JFK had nothing to do with them not being there- this was a fable blamed on the dead president who could not defend himself by a few agents to the WC (only because they asked) 6 months after the assassination. My interviews and correspondence totally debunk this blame-the-victim crap.