I've decided to go back and finish my masters, and when I'm done I'm seriously considering Federal law enforcement or some other kind of Federal service (CIA/NSA/DOD, etc).

I'd like to speak with anyone who has real world experience with any of these agencies, as I need to know what to expect and how to prepare. All the information I have at the moment is from the agencies' respective web sites, and movies

PMs or email would be appreciated.