i think it affects the operating environment, it affects the threats and challenges the military will have to face. it makes a difference in the type of capability you want to acquire. the depth and is a lynnity and temperature of water affects how sonar equipment works. explain? sonar waves travel through in the density of the water, based on how cold it is, the is a lynnity changes the sonar waves that are produced, and the feedback back to the sensor, when the climate change, it changes how the sensors operate, and that s true of the rest of the climate as well? there s very specific equipment changes that one would need to make? yes. is there a lot of energy going into thinking about this, the major adaption that s going to have to happen? i think there is, because one of the things that military forces want to do is operate in what we would call a permissive environment.
side of sound, sonar waves. it comes back. what it will create out of that is a 3-d relief map of the bottom of the ocean floor like this, and then you can actually look at it and see anything in there that you might think would be wreckage, but you simply cannot deploy these over a vast area. i keep saying to people it s like this, if you lost your keys in your home, you could walk through your home and look for them and you have a chance of finding them. when you start talking about specialized things underwater, side scan sonar, you can get a very clear picture but it s like searching your home through a soda straw. you can get it but that s not how you start. you must have a clue. so all the work up there in that stormy weather and in those rushing currents, that s why that s so important, because if they don t have a clue up there, they really can t even begin to search down here. carol. tom foreman, thanks so much. let s imagine for a moment, if you will, that that search are
hugely hugely busy area and it s not terribly deep. its average 65 to 75 feet, something like that, the maximum depth is 328. so it s not really deep but that heavy travel blessing and a curse. the blessing is, a lot of ships out there, maybe be somebody sees something. there are a tremendous number of ships going up and down this channel. that also means a lot of noise. if they start using sonar waves under the water, that s harder to do with big ships going by every few minutes. tom foreman, thank you very much. i want to bring in mark weiss who is flew the boing 777. thanks very much for taking the time. talk about the issue of the transponder first and foremost. can you think of any reason why the pilot would have turned it off on purpose without nefarious intent? no, not really. the transponder is really a safety device.