i recently heard from somebody i know, who i know to be a very smart person, who happens to be intrigued about the JFK assassination...he said that, after the assassination, somebody who had a camera had taken a picture of JFK right before he was shot, riding in the car, and in the background of the picture, it is clearly visible, a man in a black suit, standing under an umbrella he was holding with one hand and a machine gun pointed at JFK with the other hand...apparently this picture was confiscated by the FBI/secret service/cia or whomever and destroyed...just wondering about the authenticity of this claim, and if anybody has heard about it