it was checked for blood and gunshot residue. >> none of which we found. we didn't find anything. >> in addition, dale and christie bradley agreed to take polygraph tests and they both passed. >> at that point, they kind of dropped his name from the list of suspects. >> meanwhile, investigators pursued another potential lead. two of bryan's fellow security guards had been arrested for stealing from the mine. >> they were arrested for stealing metals of kennecotte property and pawning them for junk metal shops. >> one of those guards was at the guard shack minutes after bryan was reported missing. >> bryan was one of those at the guard shack who reported some of those thefts going on. without bryan's body, police had no proof he was dead. officially, he was still a