AP file photos
On April 4, 1996, Theodore John Kaczynski is flanked by federal agents as he is led from the federal courthouse in Helena, Mont.
AP file photos
AP file photos
AP file photos
AP file photos
In this April 4, 1996, photo, Ted Kaczynski, also known as the Unabomber, is escorted into the federal courthouse in Helena, Mont.
AP file photos
courtesy of California University of Pennsylvania
Associate Professor John Cencich, a retired federal agent and international war crimes investigator who now heads the Pennsylvania Center for Investigative and Forensic Sciences at California University of Pennsylvania.
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