potential confirmation on the fate of flight 370 or will it become the latest dead end in the search? david soucie author of "why planes crash," dave mcallen. judging by the description found, metal, rectangular, rivets, fiberglass coating how would they verify it's part of the plane or rule it out? >> from what i've heard, it really wouldn't be convincing to me that of course without look agent picture we wouldn't know. what you'd be looking for to make sure this is or isn't part of the aircraft, on the inside of the sheet metal that's on outside of the aircraft, inside of that is a zinc chromate finish, it's a dark or light green color, and that green color's very distinctive, very easy to test to see if that zinc chromate is there. on the outside you have a enron paint it wouldn't be rusted or have any signs of extended wear