It's true. Look hard in the lower foreground of the Zapruder film just as the limo exits from behind the sign and you can plainly see him. He somewhat resmbles a combination of Jesus, Shakespeare, and Andy Warhol in the film, but in person has been said to have features more closely akin to Jimmy Hoffa and Sir Francis Bacon.
This piece of evidence was just uncovered and now the obvious tie in between the Cubans, the Mafia, the government, and the Tooth Fairy can be explained. This same Alien was seen gassing up a Yugo just prior to the WTC bombing. Again, he showed his FBI ties by charging the gas to Efrem Zimbalist Jr. Prior contact had been established at Area 51 but only once. It is widely suspected that the Alien's trianglular tin hat was crushed and a suitable hat blocker was not available there. Now, clandestine meetings are held only at Area 37, deep in the heart of Mississippi where the inbreeding makes the Alien look quite normal when compared to the locals.
Many suspect that the next target will be the squaring of the Devil's Triangle so as to include bizarre events occuring in Washington DC, such as GWB's brains being removed of all gray matter and moved to his balls.