Some duties may require the use of protective equipment, which can include hard hats, safety glasses, and eye protection, air masks/respirators, ear protection, chemical suits, flame-resistant clothing (FRC), hot gloves, high-voltage protective gear, and fall protection. Operate and monitor auxiliary systems and equipment, including fuel gas, starting air, compressed air, engine cooling, lubrication, ventilation, water treatment, electrical distribution, and other locally controlled mechanical and electrical systems.