trade school

8. a trade specialist who works on systems and equipment designed by engineers, sometimes directly supporting engineers. Mechanical technicians can sometimes be referred to as mechanical engineering technicians.
10. ensure that construction meets local and national building codes and ordinances, zoning regulations, and contract specifications.
12. a builder and worker in stone.
13. heating, ventilation, and air conditioning. It refers to the systems that regulate and move heated and cooled air throughout residential and commercial buildings, from homes to offices to indoor stadiums
14. A truck driver is a person who earns a living as the driver of a truck, which is commonly defined as a large goods vehicle or heavy goods vehicle.
16. a person who installs and repairs the pipes and fittings of water supply, sanitation, or heating systems.
17. a person who welds metal.
19. the ground-based personnel and equipment concerned with monitoring and controlling air traffic within a particular area.
21. a professional operator of a film camera or video camera as part of a film crew.

1. someone who constructs, modernizes, repairs or services conveyances. Typically, elevator mechanics work on elevators, escalators, dumbwaiters, wheelchair lifts, moving walkways and other equipment providing vertical transportation.
2. performs pharmacy-related functions. Training, certification, licensing, and actual practice of pharmacy technicians varies not only worldwide but in some countries regionally as well as by employer.
3. a person who installs and maintains electrical equipment.
4. the surgical opening or puncture of a vein in order to withdraw blood or introduce a fluid, or (historically) as part of the procedure of letting blood.
5. a person who makes boilers.
6. health professional that deal with the circulatory system
7. a person who makes and repairs locks.
9. allied healthcare professional who specializes in the use of ultrasonic imaging devices to produce diagnostic images, scans, videos or three-dimensional volumes of anatomy and diagnostic data
11. a driver licensed to operate vehicles classified as commercial vehicles
15. who services and repairs automobiles, sometimes specializing in one or more automobile brands or sometimes working with any brand
18. a person trained in subsidiary legal matters but not fully qualified as a lawyer.
20. specialize in magnetic resonance imaging scanners