secret agent
intelligence officer
intelligence agent
operative

I had a good record as an Intelligence officer, you know.

He'd seen the same look often enough on the face of his intelligence officer.

But I keep trying to tell you, you're an intelligence officer.

"You figure things out pretty good for an intelligence officer."

I want your information, but not so much as to have my intelligence officer called such.

"Perhaps he is not known to be an intelligence officer."

The intelligence officer was the first to make sense of it all.

Then he called his intelligence officer over the radio to learn what was new.

So, the intelligence officer, was asked, how did you know all that?

Which was only due to his experience as an intelligence officer.