take a look at the hard drives of the computers, take a look at the audio tapes, take a look at the video tapes, and presumably that would be very useful. but based on what we're hearing, they're not doing that. they're giving an assessment based on their conclusions. >> every crash has a unique dna. look at twa 800. everybody thought it was a bomb. a fuel tank had never exploded before from an internal source. it turned out it was the fuel quantity indicator system. so you need to caution that everything we mains on the table. we have not ruled out any kind of mechanical failure or anything. it's baffling. >> and you're reporting for the "the new york times," are you getting a sense from your sources that they're making progress or they're almost back to square one? >> i think they're making so