My city actually does have a separate unit, but like they’re still armed police, and they’re still a part of the police department. They also have like zero access to any extra resources. It’s honestly sad. They hosted a training session for my department (library) once and it was not apparent how they differed from the police in any way other than extra training. I’m sure if I called them on a patron they’d be so chill that I got a special unit to come out. /s