Installs, tests, maintains, troubleshoots, repairs, replaces, and modifies airport exterior electrical equipment and electrical distribution systems, including medium voltage electrical distribution systems, airfield lighting systems, street and parking lot lighting systems, navigational aids, traffic signal systems, standby generator systems, programmable control systems, and associated airport electrical infrastructure. Installs, tests, maintains, troubleshoots, repairs, replaces, and modifies medium voltage (4160V through 34.5kV) electrical distribution systems, low-voltage switchgear, main distribution panels (MDPs), airfield lighting systems, associated series circuits, constant current regulators, standby generators, and other airport electrical infrastructure supporting safe and continuous airport operations.