Ferguson's Career Guidance Center - Library database to search fire careers for Fire Inspectors, Fire Investigators, etc.
Bureau of Labor Statistics (BLS) describes careers and has the answers to the following:
"The O*NET Program is the nation's primary source of occupational information. ...Central to the project is the O*NET database, containing hundreds of standardized and occupation-specific descriptors on almost 1,000 occupations covering the entire U.S. economy. The database, which is available to the public at no cost, is continually updated from input by a broad range of workers in each occupation."
Click for the O'Net occupational definition of 33-2011.00 Firefighters
Click for the O'Net occupational definition of 33-2021.00 Fire Inspectors and Investigators
New Jersey Civil Service Commission
The New Jersey Civil Service Commission is single largest employer of career fire fighters to work for local municipalities. List of New Jersey civil service municipalities
Each year various Bureaus within the Department of the Interior seek out employees who will fill the hundreds of seasonal wild lands firefighter positions. These jobs are listed on USAJOBS.GOV.
The US Forest Service recruits wildlands firefighters. Seasonal jobs in firefighting include working on a local unit hand crew, on a helitak / heli rapelling crew, a HotShot Crew, as a smokejumper, or on an engine crew.