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60 miles from last known location in the air of this plane, which raises the possibility of a very large debris field. so does that make it clear that there is still a lot of work to be done before you can start reliably putting something in the water, a hydrophone and come to find where the black box is? >> correct, jim. good evening jim and richard. here is a pinger. this is a typical -- typical of the one installed on the aircraft in question. the range of these pingers is like you said about...