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Washington this morning. thank you. i want to talk more about the search for flight 8501 with former inspector general of the u.s. department of transportation mary schiavo, i'm also joined by thomas altschuler the vice president of teledine marine system which is helps locate planes. welcome to both of you. >> good morning. >> good morning. thomas i want to start with you because your company makes an underwater suv that might be used in this search. can you tell us more about that? >> so what we manufacture is an autonomous underwater vehicle that's very similar to the type of vehicle that w...

So you take avs or side scan sonars you can map out the whole area once they use pinger, they can map out the area and get good sound images which look like pictures of the wreckage and then they can make dive plans or rov plans, which are remote operated vehicles to manipulate with arms. >> there is such an advantage that this is less than 100 feet deep in some areas because, as you said enough marriage of technology and then the human factor because those human eyes on some of this is going to be -- you can make judgment calls and it goes faster. >> divers are still limited, they only have a...

Mile path on the ocean floor to search back and forth, mow the ocean floor with the immersibles and side scan sonars. if the batteries die it is unfortunate because we are looking at weeks or months of constant searching. >> even with the smaller search area, right? >> even with the smaller search area. with the larger search area, i don't like to be not optimist ic but with the larger search area without the pings it would be impossible. impossible put down the sonar until they narrowed it down to what we got. >> hold on a minute because i have a question for martin savidge. martin, searches ...