May be exposed to: blood, body tissues or fluids; hazardous chemicals or waste material; high, low or fluctuating temperatures, high humidity or wetness, and seasonal outside weather conditions; grease, oil and dust; radiation, toxins, cytotoxins or poisonous substances; bodily injuries, burns, loud or unpleasant noises, electrical hazards; electro-magnetic radiation. Responds to a fire alarm or other related fire emergencies, lays and connects hose lines, holds nozzles, turns water on and off and directs stream to control or extinguish fire; climbs ladders, uses chemical extinguishers; makes openings in buildings for purpose of ventilation and entrance; protects property from damage by water, cleans up premises and salvages property.