never said it. >> while father and son were inside the fbi, evidence technicians were combing the williams' home. the fbi's top fiber expert, harold dedman, led the search. in wayne's bedroom he took clippings from a purple bedspread and from a yellow blanket. >> your blanket was located under wayne williams' bed. >> on the floor, a green carpet. this is a blow-up of those carpet fibers. >> they're the only company to produce a fiber like this. >> but larry peterson was still in the dark. >> i had no idea there was a bridge incident. >> he had been called to the fbi office to help search this station wagon. but not told why. then he spotted fbi techs returning from their search and so he went out to the home to snip fibers for himself. >> saw all the green carpet.