ocean, towards the search that is under way for any clues that can directly tie something to this missing jetliner. so far there hasn't been a single one. natalie? >> it is truly remarkable that there hasn't been and certainly, you know, no one wants to get hopes up that these clues might become apparent in the southern indian ocean, that it could be part of the plane. but the it were, jim, that is only the start of still trying to figure out what brought this plane down. >> but at this point, you know -- and you're absolutely right. these are clues. but you're absolutely right, it would only be the beginning of what would be a miles deep search for potential wreckage of this aircraft. but we haven't even seen a trace to go down that would justify