I agree with both Otto's, and Dutchrailnuts point because since this 9/11 fiasco, and being deterred by MTA police at Grand Central by being told not to take pictures on platform level, it is not a good idea to get this simulator stuff for now. You'll never know what will happen at this day and time.
A simulator is just that, a *simulation*. It's for relaxation, for fantasy, and perhaps for practice. As long as someone is sitting behind the computer playing MS FlightSim, they're in no position to harm anyone. The point at which security should be applied is when people move from thoughts or fantasies to action, e.g. when someone tries to rent an airplane at Meigs Field.
If the terrorists succeed in taking away our innocent pleasures, they have won: they have changed our "decadent Western" lifestyle. I like to study track diagrams to see how railroad operations work. The NYT story on the Penn Station dispatcher's board fascinated me. I'm a railfan. So what? "It's a free country".