aircraft if that is what it is. >> the next strategy will be to try to use the pinger locater. the challenge is that they are close is the operating distance. it's going to be interesting to see you know, what kind of depths they come up with. but the operating depth is 4500 meters. it was 3800 meters and it would be deeper than titaniitanic. it's deep for a wreck. >> what about the submarines, they are assets here, are they of use at this point? >> they may be okay to listen. but in terms of reaching the