reactor, but it did emit measurable levels of radiation, likely exceeding 1,000 times normal background radiation. Alarmed, Hahn began to dismantle his experiments, but in a chance encounter, police discovered his activities, which triggered a Federal Radiological Emergency Response Team involving the FBI and the Nuclear Regulatory Commission. On June 26, 1995, the EPA, having designated Hahn's mother's property a Superfund hazardous materials cleanup site, dismantled the shed and its contents and buried them as low-level radioactive waste in Utah. Unknown to officials, his mother, fearful that she would lose her house if the full extent of the radiation were known, had already collected the majority of the radioactive material and thrown it away in the conventional garbage. Hahn refused medical evaluation for radiation exposure. EPA scientists believed that Hahn's life expectancy may have been shortened due to his exposure to radioactivity, particularly since he spent long periods in the small, enclosed shed with large amounts of radioactive material and only minimal safety precautions, but he refused their recommendation that he be examined at the Enrico Fermi Nuclear Generating Station. Career Hahn became depressed after the scandal, a problem exacerbated by the breakup with his then-girlfriend and the suicide of his mother in early 1996. While he did graduate from high school, he lacked any direction or plans thereafter. His father and stepmother first encouraged him to attend Macomb Community College. He enrolled in a metallurgy program there, but frequently skipped classes. He was then encouraged to join the military, so he enlisted in the Navy, assigned to the nuclear-powered aircraft carrier as an undesignated seaman (pay grade E-3). After a four-year tour, he achieved interior communications specialist with a rank of petty officer, third class (pay grade E-4). After his time on USS Enterprise, Hahn enlisted in the Marine Corps and was stationed in North Carolina. After a few years, Hahn achieved the rank of lance corporal (E-3). Shortly after returning from a rotation in Japan, he was honorably discharged on medical grounds and returned to Michigan. FBI investigation On April 23, 2007, the FBI received a lead regarding Hahn's alleged possession of a second neutron source in his freezer. Contacted via telephone, Hahn insisted that he was not in possession of radioactive material. The FBI decided no imminent terrorist threat was present but decided to attempt a personal interview. During an interview at an FBI office on May