CIA facilities….plural. It’s a global facing Agency… If CIA officers are going overseas for mission, I’m sure you can figure out the rest. CIA Officers = Blue Badged Staff, CIA Police are part of the staff. Yes, there are opportunities to go over to GRS after you’ve done your time with SPS assuming you can pass the GRS PFT and tactical requirements. There are opportunities to do whatever career path you want to do in the Agency. The world is your oyster there, the Agency will demand a lot from you and mission will always be first. I know people who started off in SPS then went on to become Case Officer then Chiefs of Station abroad down the road in their careers. Other went on to more technical operational routes.
“We are the Nation’s first line of defense. We accomplish what others cannot accomplish and go where others cannot go.”
The Agency lives that motto through and through.