So-called forensics state it was possible Lee Oswald was sole riflemen. Gunnery Sergeant Carlos Hathcock, USMC STA had a mock assassination replica set up at Quantico or was it on FBI side? It was set up per Warren Commission distances and heights. No one from FBI and no one from USMC STA could duplicate what Lee Oswald allegedly did according to Warren Commission.
No one has stated who financed Lee Oswald. Oswald was poor. He stayed poor and broke. Someone or some group financed his travel to Soviet Union. Someone or some group financed Oswald's travel to Mexico City, Mexico shortly before JFK assassination.
Oswald, whether he was one of the riflemen or not was set up to take the fall. Immediately after JFK assassination when Dallas PD were only seeking Oswald for murder of Dallas Police Officer, JD Tippit, around the world profiles of Oswald as lone gunman with long feature article regarding Oswald's travels to Soviet Union were in newspapers on the other side of the world. That's classic CIA activity.