Germanwings flight.

I'm an airline pilot for a living for a major carrier.

When we do the "bathroom shuffle" the flight attendant that comes up front to replace the pilot hardly ever sits down....like almost never. Technically, they're not allowed to as they're not "current and qualified" in the seat. They stand by the door.

They're one job in life at that point is to open the door for the other pilot in the event something goes wrong: loss of pressurization, medical event of remaining pilot, and I guess we can add batsh*t crazy to that list as well.

In any point, how we do things would have most likely prevented this....or at a minimum discouraged el nutbag from trying it.