a search warrant for his car. it was checked for blood and gunshot residue. >> none of which we found. we didn't find anything. >> in addition, dale and kristi 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 off of kennecott property and pawning them in junk metal shops, you know, for junk metal. >> 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 these thefts going on. >> but without bryan ruff's