DB, I saw a documentary that left me pretty near convinced that the Secret Service may have done the actual hit on JFK. If true, it would explain how JFK's motorcade route information was always known to his enemies, were it Dallas or Chicago.

It might be that the CIA had double agents working for Secret Service and FBI, as well as other agencies, and used these moles to make their plan come together.

The documentary I mentioned earlier displayed great ballistic evidence that JFK could not have been shot by Oswald, that the head shot came from a bullet that matched a rifle carried by one of the Secret Service detail following JFK's limo.

The Secret Service agent in question was named. What would really cinch it for me is if that agent was proven to have ties to "The Agency". The Secret Service agent's name is George Hickey.