site of the crash. >> right. and captain wright, know iing t weather here, it's fall turning into winter in that area of the world, you know, i'm told the seas can go 20-foot waves. you've just heard that the current is pretty rapid. how does that change the calculation in a search mission? what does that do to it? >> candy, in my opinion is what you need is a deep-toed sonar, which covers a wide swalt so you can get a lot of area in the time. so say the starting point the search box, in other words, they decided request which sort of debris they have and where the airliner might have gone down, then you want to get all the assets you can into locating the debris field. beauty of a deep-toed sonar is it's connected to the tow ship