"First responders are employed in critical occupations that help to promote and ensure the safety, health and protection of individuals and communities. Their daily responsibilities may involve managing crisis situations or working in dangerous or unstable environments. This report describes a cluster of first responder occupations, with particular emphasis on trends and patterns in employment, the characteristics of the individuals who do these jobs, the nature of their work, and adverse experiences they may face as a result of their potentially hazardous work. The report was prepared to provide general, national level, background statistical information on workers in three occupational categories: police, firefighters, and emergency medical technicians (EMTs). The material in this report is presented in several sequential sections, with each section relying on a distinct kind of data to describe an important aspect of first responders: personal characteristics, employment patterns, compensation, occupational outlook, and work related injuries, illnesses and fatalities."
U.S. Department of Labor: https://www.dol.gov/