burton ruled both jo-jo and the other boy found in the river had been asphyxiated. >> we didn't havene of these boys swimming in the south river in their underwear. >> other bodies were now washing up in the chattahoochee river to the west and the north of atlanta. five victims in that river in the next six weeks. >> i said, you know, if i was doing that, i'd be throwing them off the bridge. >> fbi agent mike mccomas grew up along a river in tennessee. he knew if something were to float on downstream, it had to be dropped in the middle of a river. mccomas suggested the bridge stakeouts. >> we looked at remote places, dark places. we believed it would be at nighttime as opposed to daytime. >> the fbi and police began night watches at 14 bridges over the chattahoochee and south rivers. the stakeouts were to last four weeks. nothing until the very end. >> we at that point were ready for that to be our last night. and wayne williams showed up. that night. >> just before 3:00 a.m., the station wagon drove onto the bridge. >> had he waited a couple more hours we might not have been there.