The third group is focused on counterintelligence and security. I think the reason for that is fairly evident, in terms of vulnerabilities of the department and the harm that can come to it by failing to detect when we have, in fact, been harmed.
If you stand still in any city long enough, you see everyone pass you by. So you're in Chicago. If you stand on the corner of Belmont and Clark, and you do that for three years, you'll pretty much have seen everybody in Chicago pass that junction.

