I have seen the film, several times. The computer modeling shows that for there to be a single shooter that the bullet has to turn several corners. It will be on the History Channel again before long. Lets watch it again.
Not everything on the History Channel comes from a burning bush. I'm going to watch Monster Quest tonght to see if the Loch Ness Monster is really dead. That doesn't mean I'm conviced it exists.
Answered it for me. Oswald. Alone. From the 6th floor of the TSBD.