Fire Police are Volunteer Fire Brigade/Company members who may also have sworn police powers. They receive special police training and are responsible for traffic control, crowd control, fire and incident scene security, apparatus security, and station security during calls for service.

They also assist regular police when needed, performing road closures, traffic control, crowd control at public events, missing persons searches, parade details, salvage, security, and other tasks as requested. The primary role of the Fire Police is to provide support for operational requirements at moderate to major incidents.

-- Wikipedia