Computer Systems analysts, or Computer Programmers, work on the hardware and networking side of the computer industry. They analyze data processing problems and procedures that allow them to implement and improve existing computer systems and review computer system capabilities, workflow and scheduling limitations.

Diesel technicians inspect, maintain, repair and care for diesel engines. Some diesel technicians specialize in a specific type of vehicle. When commercial transportation has malfunctions, they diagnose the problems and find solutions.

Electricians install, maintain, and repair electrical power, communications, lighting, and control systems in homes, businesses, and factories.

​HVACR technicians install, maintain and repair the heating, ventilation, air-conditioning and refrigeration systems in buildings. These machines control the temperature and air quality in homes and businesses.

Machinists create their own parts and tools from raw materials. The parts and tools they create with their machines eventually go toward building larger things.

Welders fuse and cut metal materials. They can work in several different industries, so welders might build structures or repair existing infrastructure.