We now know with forensic certainty that two frontal headshots and one shot from the rear at a low angle (not from the sixth floor of the Texas School Book Depository) killed JFK. The evidence for these conclusions comes from a new book, The Assassination of President John F. Kennedy: The Final Analysis, that I have recently published with Dr. David W. Mantik, who has a Ph.D. in physics and a medical practice extending over five decades as a radiation oncologist and who has seen the JFK autopsy skull X-rays more than anyone else. Using a densitometer, Dr. Mantik measured...