sophisticated jets, the 777. you said the thing that jumps out at you is the fact that no messages were sent from the plane, intentional messages, automatic messages. >> that's right. people who remember air france 447, which was an airbus, not a boeing, but the plane itself sends system status messages. literally the plane with this very advanced electronics sends these messages back to its home base to check on the health of the plane as it's going along, if it needs something at the next stop. apparently so far there were no such messages received. that's very unusual. >> what does that tell you? would it be that the plane was gone potentially? >> yes. it tells me something very dramatic happened on that plane. this plane doesn't just have redundancy, it has in some places triple redundancy. there are many backup systems on this very advanced plane. whatever happened was very catastrophic. >> i keep going back to just hopping on a plane yesterday,