custody of the plane's two black boxes. the transportation minister says determining who takes charge of the devices is not as important as finding out the truth. the initial search by the bluefin-21 was supposed to last 20 hours, including two hours down and back up, but a source now says the mission lasted less than eight hours. for the latest, let's go to our correspondent will ripley in perth, australia. what are you learning, will? >> we're still working to confirm with the joint agency coordination center whether the bluefin-21 is back in the water yet. we know there was some rough weather in the area that was delaying them getting that submersible back in the water. its mission on monday, late monday night, had to be cut short. it was aborted only 29% in. so less than a third of the work was completed. we're told the reason for that, as you've said, the submersible got down and the water in the area was deeper than the programmers bleaprogram ers believed it was. they program a route ahead of