I know of at least 2 FAMS who came from the CIA SPO ranks. They were good eggs and had a few good war stories. From what I understand it starts out working the gate ala security guard BUT it does have a progression to going on something called the Mobile Security Group (or something like that...) and working some overseas gigs doing close protection work and such.
Everything else I agree with ROS 100%. Good luck in whatever you choose. They are both honorable callings.
Don
John Bernard Books (The Shootist):
"I won't be wronged, I won't be insulted, and I won't be laid a hand on. I don't do these things to other people and I expect the same from them."