It's obvious that you have never worked a transponder. You don't "flip a switch" and activate a hijack code. A transponder has either four dials
that you set to the code, or a numberpad that you punch the numbers in on. When you are given your code, you set the dials to whatever numbers they
give you, and your transponder sends out that code. So according to you, the hijackers would have burst into the cockpit, one pilot would have either
fought them off, while the other dialed in 7500 on the transponder, or the pilots would have said "Wait! Let me send this code first!". I have yet
to see a transponder that has a hijack button on it.
You DO NOT FIGHT in the cockpit. Besides which, the pilots would have been strapped into that tiny little cockpit, secure in their seats, not
suspecting anything was about to happen when they hijacked the planes. All the hijackers would have had to do was break in, reach around the seats,
and they could slit their throats. The pilots would have had to unstrap, stand up, work their way out of the seats, and tried to find room for all
four people in their, before trying to fight them off.
I've been in cockpits of older planes, which were designed larger than the 757/767 to incorporate a flight engineer, with a large group of people,
and let me tell you, you can barely breathe in those.


