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The captain and co-pilot, but as of right now, authorities we're speaking with, sources saying they're still nothing too suspicious jumping out at them. they're still trying to put everything into context. this investigation continues here in the u.s. and elsewhere. wolf? >> take another look at those hard drives which is smart. thanks very much, pamela, for that. let's go to perth, australia, right now, the base of the search operation. michael holmes is on the scene for us. what's the latest there, michael? >> reporter: yeah, wolf, dawn just about to break here in western australia. you kn...

Malaysians will be on the ship, they will be there but this is going to the australians because they can look at it within six or eight hours. the americans and the malaysians will be there. the malaysians will make announcement but -- >> do the australians have experience dealing with a black box that the ntsb, the u.s. has? >> they are very similar. they have the same kind of equipment. they cross-train. i have full confidence that they can take the lead and the americans will be there with them. >> the u.s. australian cooperation is first rate. so presumably the best u.s. expert, the best a...

It's dark down there. if it's in deep sit, it's going to be a tough task. wolf. >> the fifth ping we talked about so much over the last 24 hours, that now seems to be not something coming from one of those two black boxes, something else, right? >> yes, that of course the first four pings came from the ocean shield vessel towing that u.s. navy ping locator. this other thought to be ping or possible ping came from sonobuoys dropped from aircraft, dropped down about 1,000 feet, and listen in as well. they got that data back to a research area in addlaid, in south australia. they decided that is ...

They cast shadows. the sound waves cast shadows on things that the waves bounce off of. so you need somebody to kind of interme interpret the pictures that result from the side scan sonar to see if they identify anything manmade. then there's the whole fact they don't really know what's down there so, you know, like what was being said, you have to worry about tangling the bluefin-21 into something, some wreckage or some kind of features on the bottom, and if you lose that, then you've lost a whole month to get another submersible out there. >> one of the great submysteries of all of this, eri...

That's why it only runs for two hours. it captures an event which caused a problem and either the aircraft landed safely or it crashed and it helps investigators figure out what caused the event. now, the normal procedure is if something goes wrong, you follow your checklist and you land the aircraft and then as soon as everything is done, you pull the circuit breaker to shut off that recording so it doesn't record over the event data. and evidently what happened was the air crew in the malaysia 747 incident in the summer of 2012 did not pull the circuit breaker and it just sat there with powe...