I'm not wrong, Blade.
If the U.S. government really used the same security system that video games used, the Al-Qaida would have leveled all of New York City on 9-11, not just the Twin Towers.
And I'm gonna laugh in your face bad when this "big secret" that you've uncovered turns out to be false.
I mean, really, not even Fox News considers this worthy of reporting.
P.S. Btw, I know what LANs are and I know that video game networks use them, but none of your three sources say that the FBI or the CIA do so.
Here's the type of computer that organizations like that use: http://en.wikipedia.org/wiki/Super_computer
It has its own server built in. Companies that use LANs don't even have mainframes, which is a type of computer one notch below a super computer. (You'll find mainframes in big corporations and banks.)
Companies like the type that run TF2... Just expensive versions of normal computers, really. Comparing them to the ones that the government has is like comparing the a comic book to Oliver Twist.