mary? >> same thing. i think that angus houston and the team there, they certainly expressed that they thought they had the pingers, they had the black box, they had the right site. it was all right there. they didn't put the crowning achievement on it. they didn't say we have the plane but i think everybody reads between the lines that they are saying that and so very important. i concur that they should use those black boxes and pingers, as long as they last. they might be in their final dying pulses, but it would simplify the length of the search because this is the first step in a long process. >> miles o'brien, angus houston also saying the autonomous underwater vehicles will not be sent down until they have exhausted all possibilities in the search on the surface both for debris on the surface and for the pingers. houston also said that he did not anticipate that would be very far off. because of the weakening -- what