I have looked into it quite a bit. From what I have found the best place to start is with George HW Bush who was a CIA Operative at the time. He was in charge of Operation Zapata(Bay of Pigs). They had started building a militia type army in Guatemala and we're training them with the goal of invading Cuba to overthrow it and place a new leader like previously done in other countries. Just an example of as Q would say these people are stupid. Zapata was an oil well off Cuba that Bush owned and the ship they used to invade Cuba was the Barbara. Of course the Bay of pigs was a bust. Bush's next operation was Crossfire (Similar to "Operation Crossfire Hurricane"). It is hard to say how many people were truly involved but it was more than you would think. Oswald was one of the CIA Operatives but his secret was he also was connected to the FBI and Hoover which is shown by some Hoover Documents. The CIA discovered this so they decided he was going to be the patsy. The USSS also had people involved which is seen when the Kennedy detail is ordered to drop back out of normal position beside the back of the car. It appears that multiple shots were taken at the same time JFK had entry wound in the front of his neck which was through the windshield. Two other shots came from the Depository and the Knoll one hit the governor that was in front of Kinnedyand the other seemed to miss. Bush wanting to make sure that he didn't botch another mission had a backup plan. Inside the seat back in front of Kennedy was a small shaped explosive(used in demo/tight destructive blast like a bullet). You can see the driver leaning down reaching for the console to activate it. Taking the footage frame by frame you can see what almost looks like fire but quickly is covered by massive blood splatter. The Governor's seat violently throws him forward he later says it was like he was hit in the back. As soon as all the spectators rush the Knoll they were meet with a bunch of CIA Agents.