As Lee Harvey Oswald could not fire his bolt-action rifle fast enough to wound John F. Kennedy and John Connally with separate shots, the Warren Commission argued that a single bullet hit Kennedy in the back of the neck and exited from the throat just below the Adam's apple. The same bullet entered Connally's back, exited from his chest, went completely through his right wrist, and lodged in his left thigh.
the real Lee Harvey Oswald did not participate in any of them. The evidence demonstrates that he was elsewhere when each of these events took place. Yet the evidence also demonstrates that they did take place and that numerous reliable eyewitnesses saw a man who they believed was Lee Harvey Oswald participate in them.
all of the shooting came from the easternmost south–facing window on the sixth floor of the Texas School Book Depository, was supported by some of the eye–witness evidence but was strongly contradicted by the medical and photographic evidence.
It's possible there were individuals who helped Oswald, but who weren't part of any larger group or perhaps unaware of what he was planning. "Remember John Wilkes Booth shot Lincoln and four were hung, including the first woman ever to be hung (by the federal government,) Mary Surratt," he said.