Oliver Stone (emphasis added):
"The Assassination Records Review Board (1994-1998) found that over 40 witnesses in two locations saw a large avulsive (i.e. penetrating outward) wound in the rear of JFK's skull. This includes highly qualified medical personnel at hospitals in Dallas and Bethesda, as well as FBI agents James Sibert and Frank O'Neill, who were at the autopsy in 1963 and restated it to the board. This wound again indicates an exit wound from a shot to the front. Conclusion: The president was shot from at least two sides, front and back — not one location."