Yep, and in 24 they use Apple laptops ever since the 2nd season..... Before that they used either HP or Sony VAIO, I'm not positive. No government agency would be using Apple computers though. They are too expensive and tax dollars don't cover the cost. Not to mention Windows based PC's work better for business and government needs in general.
I don't use a Mac (yet) but I'll stand up and defend a Mac if somebody is pulling unfair arguments against them. There are other threads for that though. Make some mac threads and you'll see me in them sooner or later.