of smoke situation that is recognized by the pilots in the cockpit you immediately don the masks. then you have full control of the breathing and the communication. in addition to putting out a squawk and declare an emergency that indicates to the ground that you are in an emergency situation. so it's -- without the irrefutable facts having been established of what was going on that aircraft and who was in control of it, then you really are just -- you're chasing theories. >> yeah, absolutely. bill, i've just got another question for you, then. because this one is from joe. joe said if any bodies from mh 370 are recovered from the ocean could they tell for certain if the cause of death is hypoxia or not? can you answer that? >> not with any expertise. i would recommend a pathologist answer that. >> richard quest? >> yes, i'll -- yes, they can.