Oswald has links to the mafia through family and potentially through David Ferrie.
He has links to the intelligence world and very clearly bumped himself into three CIA programs in the months prior to the assassination.
I believe he fired alone.
I am still not sure who he was working for.
Currently, I have a suspicion that he was wrapped in a counterintel program, run by a rogue CIA agent or two, who convinced him him that they were Cuban intel officers, and that they were going to make him a hero in Cuba after the assassination.
I think much of what happened, is tied to his trip to Mexico City weeks prior to the assassination.
My gut is that there were quite a few people intertwined between the Mafia and the CIA who were pretty pissed off about Castro and the Bay of Pigs.
Tech Snuffs JFK Controversy
November 14, 2008
By Eric Bland, Discovery News
Nov. 13, 2008 -- A team of experts assembled by the Discovery Channel has recreated the assassination of John Fitzgerald Kennedy. Using modern blood spatter analysis, new artificial human body surrogates, and 3-D computer simulations, the team determined that the sixth floor of the Texas School Book Depository was the most likely origin of the shot that killed the 35th president of the United States.
Discovery News : JFK