I know, from my former role as a government official on the staff of the ARRB (from 1995-1998), that there is overwhelming evidence of a government-directed medical cover-up in the death of JFK, and of wholesale destruction of autopsy photographs, autopsy x-rays, early versions of the autopsy report, and biological materials associated with the autopsy. Furthermore, dishonest autopsy photographs were created; skull x-rays were altered; the contents of the autopsy report changed over time as different versions were produced; and the brain photographs in the National Archives cannot be photographs of President Kennedy's brain -- they are fraudulent, substitute images of someone else's brain.