It is not so important that the fire marshal has facial recognition, because the police department chose to ask the fire department because access was then free

It is not so important that the fire marshal has facial recognition, because the police department chose to ask the fire department because access was then free of charge and a mere handshake to them. If not the fire marshal, the police department would have chosen some independent 3rd party. This is a known trivial loophole to facial recognition bans. (Former lead dev of globally leading facial recognition system.)