Dr. Mantik received his doctorate in physics from the University of Wisconsin, with fellowships in physics at the University of Illinois and in biophysics at Stanford University, and a junior faculty clinical fellowship with the American Cancer Society. He completed his internship and residency in radiation oncology at LAC/USC Medical Center in Los Angeles. A radiation oncologist with more than 30 years experience, Dr. Mantik, with the Kennedy family’s permission, has put his expertise to work analyzing President Kennedy’s autopsy photos and x-rays located at the National Archives.