I was an EP specialist for one of the nation's largest banking corporations, and lucked into the job. My military experience was minimal, and I was doing armed security for 5 years before one night being called out to the Chairman's residence due to a threat from a psychiatric patient. None of the EP guys were available on such short notice, and I went out with my patrol car and spent the night in his driveway. The police picked up the psycho, but the Chairman remembered who I was when his driver retired.
I would recommend that if you have any experience at all to go the corporate route, because most corporations are in-house, and don't like to pay the going rate for the hi-speed, low-drag types. Unfortunately, with Merger Mania, a lot of the corporations are eating each other, and putting us out of work.
I am now making more as an office administrator, but I don't get the company car, neat comms and weapons, or get to take a nap during my down-time.
I recommend BSR, Inc.'s Executive Security Driving Course very highly. I met my friend at NSA through that course, and he's still in the business. You won't get any shooting in, unless you are a Fed, but you receive the same driving instruction as the Feds.
This includes ramming, PIT, defensive and offensive line, and going 120 in the dark...
It was the best thing since sliced bread and canned beer, as far as I'm concerned.
Good luck, and...
Semper Fi!
Ken Little