well, it s quite possible. the device we manufacture only operates in water so it is a completely different system on the aircraft if it were picked up. so, not over land. that particular tracking device, not over land. this is only over water. exactly. exactly. it is an underwater locator beacon. all right, good. thank you. appreciate it. good information. chad, we will get back to you. up next, a look at some of the histories of history s greatest mysteries, from amelia earhart s disappearance and the disappearance of natalie wood and the death of marilyn monroe. plus, what if a piece of debris is found? we ll break down what it is like diving looking for that plane for the diving teams. and we ll be searching for the wreckage under water. this special coverage of the disappearance of flight 370 continues after a quick break. d services you depend on.
hochiman vietnamese aircraft. imagine you ve just called someone on your cellphone and said i m at x heading in this direction at this speed. and then you re not heard from again within the next check call. so you start to work backwards. that s how you do it. you know they were there, therefore, they were traveling in this direction at this speed and we didn t hear from them again, therefore, the search area now, sounds relatively straightforward when i talk about it to you on the television. we are talking about a very large space of land and water in this case, and that s why you now have navies and air forces from several countries that will be cooperating to find the wreckage of suches. and one other thing. they will be helped possibly by the underwater locator beacon. this is attached to the flight data recorder. it will be emiting a signal.
the phone by ken christianson, an aviation consultant and president of integrated aviation solutions. ken, what were your thoughts when you first heard this report and what are your thoughts now? my initial reaction when i first heard it was a little suspect because that data needs to be confirmed independently and without any debris field, how did they know to put it in right there? that acoustical sensor needs to be extremely close, within a mile and a half to three miles, depending on what kind of underwater locator beacon they re looking for. for them to just place that in water and get that data, i would like to see that. so you d like to see that. is there anything else you would need in terms of confirmation? well, we re one day out of the 30 days.