and here with us now is kyle bailey, an aviation analyst and pilot. kyle, given what we know at this point about where the plane went down and the ocean about that additional right-hand turn, that was taken about the plane potential lip going down as low as 12,000 feet in altitude, are there any possibilities for what happened onboard that flight that we can definitively rule out? or are all possibilities still open in your view? >> the one thing we can rule out at this point is the airplane is probably in pakistan or somewhere up north. right now, if i had to put my odds on it, i would say pretty much most likely a rapid decompression, low cabin pressure and that plane descended, either automatically or by the pilots to get down to a level where the passengers could actually breathe. >> and what sort of events would lead to a rapid depressurization? >> it's usually a structural failure. even a fire if there were lithium batteries in the cargo hold as reporting, a fire could cause a rapid decompression, any kind of structural failure of the airplane. a