able to pick up the fact that there were two different ones. if you had one sort of machines, say another ship in the area with some kind of device emitting a 37.5 megahertz signal with this one per second cycle, it would be unlikely you'd have two. so i think that the right megahertz, the right frequencies, the right repetition, one every second or almost every second and the fact that they got two of them really does get people thinking that you've got the plane and you've got both of them in relatively close proximity of each other. >> on the flip side, miles, is there anything here that doesn't fit at least to what we know so far? is there anything that leaves a question in your mind if this is the black box? >> i don't have many questions about it. the big question will be, of course, the difficulty in recovering. this particular flight path if this is, in fact, the location of the wreckage, would match some of the scenarios we