This talk by Dr. Michael Chesser is part of the online conference The National-Security State and the Kennedy Administration.
The military pathologists who performed the autopsy of President Kennedy concluded that only one bullet struck the skull, entering low at the back of the head, causing a massive exit wound at the top right side of the skull. In 1968, in response to mounting criticism of the Warren Commission medical evidence, Attorney General Ramsey Clark appointed a medical panel to review the medical evidence. This panel, and subsequently the Rockefeller commission and the House Select Committee on Assassinations (HSCA) medical panel, proclaimed that the pathologists at Bethesda who examined the wounds of President Kennedy had made an incredible mistake, and the panel moved the location of the entry wound up 10 cm higher on the back of the skull. Consider that the continental USA resembles the side view of a human skull, and this would be like mistaking San Diego for Seattle. This is all one needs to know to realize that something was seriously amiss with the autopsy evidence. These pathologists and radiologists had an impossible task, which was to make the autopsy x-rays and photographs fit the lone gunman hypothesis posed by the Warren Commission.