When he was in Vietnam, Isaac Oxereok's small build made him ideal for tunnel-ratting: running with a pistol and a flashlight into underground passages built by the Viet Cong. In 1967 he finished his tour with the Army and returned home to Wales, Alaska. Oxereok knew he wasn't quite right, but there wasn't anyone around to tell him how to get help.
"Post-traumatic syndrome?" he said. "I went through that I guess, mostly on my own. Some wounds never really show. So inside was kind of messed up."
A serial killer who committed suicide in an Alaska jail last year confessed to murdering at least 11 people across the country. But Israel Keyes didn't name names, and investigators trying to figure out who he killed are running into a major stumbling block: There is no unified, mandatory national database for missing persons.