If gas is used in the cockpit, is there some hacker who could control the plane from either in the cabin or on the ground?
What if...
What if there were gas in the cockpits of 20 planes simultaneously? The door to the cockpit is locked and secure. No way to unlock it from the main cabin, is there?
There have been a number of instances where suspicious men spent a very long time in the first class bathroom. At least once they interrupted a man trying to dismantle part of the wall in that bathroom which is adjacent to the cockpit.
Sounds crazy but who knows what these guys are up to