The Impossibility of Flying Heavy Aircraft Without Training

Bryan Martin wrote:
I don't know if it was the first time, but it happened once back in the
early '80s in, I think, Arizona. I believe it was a PSA DC-9. A disgruntled
ex-employee snuck a gun on board and forced his way into the cockpit and
shot the flight crew and then dove the plane into the ground. Of course in
that case the hijacker had a real weapon and about the only thing that might
have stopped him was someone else with a gun. Then of course there is the
case of the FedEx DC-10 where the crew barely managed to prevent a nut case
soon to be ex-employee from doing the same.

The 9-11 hijackers weren't even armed. No mater what anybody says, a box
cutter is not a weapon.

I am not disagreeing with the other stuff you wrote but a box cutter is
indeed a very dangerous weapon in the wrong hands and you could easily
kill a person with one swing, not to mention multiple attacks.
I wonder, if 911 was an inside job and nobody takes box cutters
seriously, why wouldn't the perpetrators plant other weapons in the
planes so the story would be more believable?