flights are safe and remain safe in the future. >> thanks for that briefing and work you're doing there in interviewing lufthansa officials. we should point out it was tweeted that according to their information, burnout syndrome was the reason for andreas's sabattical. but tom, at that moment the norwegian airline said they are going to change the procedures and match the u.s. requirement there be a third person. and the other thing that came to mind, there were two -- at least two intentional acts that they interpreted from the voice recorder, one was pressing a button to take the plane off of the 38,000 altitude and to send it into the descent and the other was some sort of double locking of the door because the