to suggest one direction or another. they've all got to be checked out to see which of those actually leads to the truth. right now, isolated data points and a lot of theories. >> isn't it true that a dramatic turn like the one that is hypothesized could have been done by a pilot just as easily as auto pilot? >> i think that's correct. but again, we don't know. look, i learned in my old profession in intelligence there's a difference between a secret which is something you really learn hard to discoverable and knowable and a mystery. >> when we think about the idea of terrorism, is there any reason to believe that it's more likely this was a deliberate act versus a massive decompression event? >> right now, what you need to do is look at the background noise, look at the background chatter. it's not absolutely conclusive.