Install, program, maintain, and repair security and fire alarm wiring and equipment. Ensure that work is in accordance with relevant codes.

Diagnose, adjust, repair, or overhaul automotive vehicles.

Replace or repair broken windshields and window glass in motor vehicles.

Install, repair, or adjust audio or television receivers, stereo systems, camcorders, video systems, or other electronic entertainment equipment in homes or other venues. May perform routine maintenance.

Repair and refinish automotive vehicle bodies and straighten vehicle frames.

Repair automobiles, trucks, buses, and other vehicles. Master mechanics repair virtually any part on the vehicle or specialize in the transmission system.

Diagnose, adjust, repair, or overhaul aircraft engines and assemblies, such as hydraulic and pneumatic systems.

Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and mining.

Repair only one system or component on a vehicle, such as brakes, suspension, or radiator.

Diagnose, adjust, repair, or overhaul railroad rolling stock, mine cars, or mass transit rail cars.