They can get their convictions expunged and join a firefighter academy to be trained further, or they can get their convictions expunged and get a job in landscaping or some other thing.
Watch the video I posted before you run your mouth off any further. I don't think you have enough information to be this uptight about something that you aren't living with. I'm fourth-gen Californian; you're French. This is not relevant to you the way it is to me. I have family in LA.