double zero and V2 + a little:
I am just a lowly airline pilot, but I do dare to say this:
There is nothing about my job that is classified information whatsoever. Therefore I/we can discuss anything anytime on the net. That includes "secret" codes for unlawful intervention. Which turn out to be googled at will and are therefore not so secret.......
Such as squawk 7500, 7700 and flaps up/down or similar.
The bottom line is: The cockpit door stays closed. Even if they are killing off the cabin attendants one at a time in front of the camera, which I will have swithed off by then.