spokespersons said it does appear to be a manmade signal. again, always caution but that would be ping number five. >> and we're hearing now that that was the captain that gave the last word from the plane. are they sure about that? because initially they said it was the co-pilot and what leaked out arrest being ts being the le not in fact the last words, so how do they know it was the pilot? >> it really is extraordinary, really, that we're still just getting confirmation on things like this. initially they said it was the co-pilot and that the wording was different. now they have pilots together and got them to confirm, pilots who knew both the pilot and co-pilot, and said it was the phrase as we know now, good night, malaysian flight 370. and that is pretty standard