accident investigator how one would approach even examining debris? >> well, there's, you know, items on the macro scale or large scale that we would be looking at but also things on the micro scale. so they would be looking at how the metal is deformed, what part of the airplane, the way it is bent, the angles, and also for some of the items, they're going to look at the smaller cracks and smaller lesions and so forth that that might be telling also. the bottom line is you have to get wreckage in your hand and decide what level they feel like they're going to need to look at it. >> say we know it isn't going to happen, for the sake of conversation, they find the debris, have it in their hand tomorrow. so that's three weeks it has been sitting and floating, you know, with marine life and sea water. would that damage it at all? >> well, absolutely. there certainly will be some damage. it depends what type of metal, steel versus aluminum versus