Mathematics
Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.
Building and Construction
Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.
Design
Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.
Computers and Electronics
Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
Mechanical
Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
Repairing
Repairing machines or systems using the right tools.
Equipment Maintenance
Planning and doing the basic maintenance on equipment.
Production and Processing
Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
Physics
Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub- atomic structures and processes.
Public Safety and Security
Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.
Engineering and Technology
Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.