was probably in the water, how far it might have drifted. one of the things we have to keep in mind in all of this is even though this possible piece of mh-370 has now refased, it's unclear where the plane is and they hope they might be able to discern some sort of clues as well. one of the other things, john, that this lab is actually specialized in is also determining through scientific analysis whether or not the plane broke apart after possibly some sort of explosion in midair or whether or not the part was ripped off upon impact on water. now, it's unclear whether or not this part, this piece of wreckage specifically will be able to tell them that, whether it's big enough, whether there are remnants of whatever might have happened on it, enough for them to be able to tell that, but this is certainly something this laboratory is specialized in as well, john. >> fascinating focus of this investigation right now. just part of it. fredrick, thank you so much. so exactly what clues, as fred was getting to, what clues will that wing part or flaperon provide? and also what about that