Isn't it ironic?
We locked the doors to the cockpit to keep terrorist passengers from gaining access to the flight controls.
Now the latest theory on the missing airliner is that one of the pilots might have been either suicidal or a terrorist and that he might have hijacked or crashed the plane (or both).
Its pure craziness. You can't build enough safeguards to prevent evil from doing its thing. All you can do is be prepared and equipped to fight it.
It would be heartbreaking to learn (and this is a massive what-if) that one of the pilots was fighting to save the plane while the other was fighting to destroy it...and the passengers sitting in the back were unable to help because they couldn't get through the security door.
