There is nothing complicated about the JFK assassination. A lowly paid laborer learned the POTUS was going to ride past his workplace in a slow moving open top car and for reasons known only to him, he smuggled his cheap, war surplus rifle into work, found a secluded spot on the 6th floor and lay in wait. When the POTUS arrived, he waited for the limo to pass the window he was waiting at, then stuck his rifle out the window and fired three shots, striking him with two, and killing him with the third shot to the head. End of story.