To shave or not to shave for an interview?

I have an interview scheduled for a large SF Bay Area agency. I've seen male dispatchers for them with neatly groomed beards and goatees as well as officers with full beards. I'm also a former trainee with another nearby department not just coming from service/retail. I have a decent beard as well, since I'm just interviewing do you recommend I shave it off? Thanks.