An insurer that provides a general liability insurance policy to a fire department, fire company, rescue department, or rescue company shall offer to provide coverage for: a volunteer firefighter or volunteer ambulance rescue squad member who, in response to an emergency, provides assistance to the fire department, fire company, rescue department, or rescue company; and any other individual who, in response to an emergency, provides assistance at the request and under the direction of the fire department, fire company, rescue department, or rescue company.