>> reporter: hi, john. there's going to be extensive testing. one of the things we do know is even though some malaysian politicians are saying they're pretty certain this is a piece of a 777, the folks here are going to want forensic proof that is, indeed, the case. not only that, they're also going to want to prove that it is, indeed, a piece of mh-370 if, indeed, that is what it is. what they're going to do first of all when the piece of the wreckage arrives is they're going to look at it very carefully, take it apart, be looking at any sort of numbers that are printed on the inside or anywhere on that piece of debris and see whether it matches the aircraft model and also whether it matches mh-370 in particular, and then one of the other things they do here as well is metal test. they have some sophisticated equipment here. some of the most sophisticated in all of europe and they're going to be testing not only the metal itself but also the paint, of course, to see if it matches, the kind of paint that was used on mh-370. also check and see how long it