DUDE!
If you like IT, and want to carry guns and shoot things, join the military.
Having said that, Join the Air Force, not the Army. Unless you like to deploy for long long periods, periodically, and really don't want to see your wife and family.... just kidding.
I love what I do, to a degree. And this is comming from a person who did work in the IT field, as a customer support rep for a hospital. Outstanding people to work for and with, but I ALWAYS wanted to fly. Right now I'm not doing much of that as well.
If you have college, be an officer, get paid more for what you do, and definitly go Air Force. Better bases, and located in better spots in America.
Dave