As used in this chapter, the term:

(1) "Emergency medical technician" means an emergency medical technician as defined in Code Section 31-11-2.

(2) "Fire department" means a service group (paid or volunteer) that is organized and trained for the prevention and control of loss of life and property from fire or other emergency.

(3) "Firefighter" means an individual who is assigned by a fire department to fire-fighting activity and is required to respond to alarms and perform emergency action at the location of a fire, a hazardous materials emergency, or other emergency incident.

(4) "Public safety officer" means an individual sworn to enforce the criminal laws of this state or any county or municipality of this state.