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Out front, investigation on exactly how that triangulating will be happening. but joining me now is bob ballard, the underwater explorer who found the wreckage of the titanic. bob, its great to have you with us. you know more about this than anyone. you recently have gotten planes out of the water. so here is the bottom line question. do you think that they are now looking in the right spot? >> yes. it looks like the search area is collapsing to a square that you can now mount the next vehicle s...