Ya your right, still makes me wonder though. I mean if it really was just a loose bolt or something, why call off the whole landing? I mean who cares if there is some debris floating around in space fly through it and land.This may have been a delicate situation for NASA. If they subscribe to the notion that chunks are continuing to fall off shuttles, then public confidence may drop. If they go with the UFO notion, then they give license to the so called UFO nuts.