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Much of it at the ocean floor two years later, and similar issue there where the ocean floor was not mapped, and did that play any role in it? >> well, i'm sorry to say that it is beyond my expertise, but you know, it is that was my understanding that it is true. that is pretty vast in that particular area where air france 447 went down, yeah. >> but as, so they do the sort of side scan, sonar, what are they really getting back? what kind of information do they get back, miles, and do you think that this is something that they do now even if they are not for sure that it is a ping? >> maybe, y...

>> yeah, i heard the feedback. the problem i have with this is we criticize the malaysian government from losing control of the message in their command post running this investigation. now it's been -- the search part has been in the hands of the australians and they've lost control of it. the fact that we're getting reporting by way of xinhua, a chinese-owned newspaper, government-owned newspaper, i should add, cctv china, which is also government-owned the network, based on reports from aircraft and ships belonging to the chinese government, if that information was, in fact, relayed to the ...

The two men had visited, pilot and copilot visited and also found nothing in any of that data that raises suspicion. david gallo, how significant is this submarine? again, unless you know -- unless you have a debris field, a sense of where the plane went in the water, is the sub any good? >> in the air france 447 the french had a military submarine on scene as well. the principal task of that sub was to listen for the pingers and black boxes, which it didn't here. i assume that's part of the role here. military subs don't go anywhere near as deep as the sea floor in this area. there's maybe on...

Had a military submarine on scene. i assume that's part of the role here, because military subs don't go near as deep as the sea floor is here. it's too deep. they don't normally carry the sides of side scan that can scour the bottom. maybe it has it but it would be classified. but it remains to be seen what the mission of the sub is. >> they would not be involved -- one of the things that kim was saying about the sub, they sometimes look for ships on the surface during their regular duties but they wouldn't be looking for debris? >> i think they could, but i would be surprised. maybe that's t...

Malaysian source that they checked the websites, they scoured the websites the two men had visited and also found nothing in any of that data that would raise suspicion. david gallo, how significant is this submarine? unless you have a debris field, is a sub any good? >> in the france 447, the french had a military submarine on scene. i assume that's part of the role here, because military subs don't go near as deep as the sea floor is here. it's too deep. they don't normally carry the sides of side scan that can scour the bottom. maybe it has it but it would be classified. but it remeans to b...