But if you really want an IT job in intelligence or the D.o.D. sphere, join the service for 6 years. Gives you a big leg up in getting the position, and the government will pay for your degree on top (G.I. bill).
Oh, and get your head checked. Actually working for the government in a position like that is full of so much soul-crushing suck, no one who thinks they want to do it actually feels the same way after they've gotten in.