Directly supervise and coordinate activities of agricultural crop or horticultural workers.

Inspect buildings and equipment to detect fire hazards and enforce state and local regulations.

Supervise fire fighters who control and suppress fires in forests or vacant public land.

Review, evaluate, and analyze work environments and design programs and procedures to control, eliminate, and prevent disease or injury caused by chemical, physical, and biological agents or ergonomic factors. They conduct inspections and enforce adherence to laws and regulations governing the health and safety of individuals. This includes environmental protection officers.

Diagnose, treat, and help prevent benign and malignant medical and surgical disorders of the genitourinary system and the renal glands.

Diagnose, treat, and help prevent allergic diseases and disease processes affecting the immune system.

Treat diseases, injuries, and deformities by invasive, minimally invasive, or non invasive surgical methods, such as using instruments, appliances, or by manual manipulation.

Diagnose, treat, and help prevent diseases and injuries that commonly occur in the general population. They refer patients to specialists when needed for further diagnosis or treatment.

Officiate at competitive athletic or sporting events. They detect infractions of rules and decide penalties according to established regulations. Includes all sporting officials, referees, and competition judges.

Develop comprehensive plans and programs for use of land and physical facilities of jurisdictions, such as towns, cities, counties, and metropolitan areas.