greybull, wyoming. >> we learned from a good friend who saw andrew risch and john together on january 18th, 1999, that in fact, andrew risch had been at the trailer house of john. >> but andy said that john was alive and well when he and sharon left to return home. police searched the couple's apartment and found marijuana, methamphetamine and several .22-caliber bullets, the same caliber used to kill helble. these bullets along with the slugs from helble's body were sent to the fbi for a neutron activation test. >> that's where the lead is shaved up to the ball, it's melted down and atoms are counted. >> counted and then compared. but the atomic composition of the bullets recovered from john helble was not what