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

Repair and refinish automotive vehicle bodies and straighten vehicle frames.

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

Install, diagnose, or repair communications, sound, security, or navigation equipment in motor vehicles.

Inspect, test, repair, or maintain electrical equipment in generating stations, substations, and in service relays.

Repair, test, adjust, or install electronic equipment, such as industrial controls, transmitters, and antennas.

Install, adjust, or maintain mobile electronics communication equipment, including sound, sonar, security, navigation, and surveillance systems on trains, watercraft, or other mobile equipment.

Repair, maintain, or install electric motors, wiring, or switches.

Install, inspect, test, adjust, or repair avionics equipment, such as radar, radio, navigation, and missile control systems in aircraft or space vehicles.

Test or repair mobile or stationary radio transmitting and receiving equipment and two way radio communications systems used in ship to shore communications and found in service and emergency vehicles.