Careers that relate to Public Safety Administration

Research several different careers that relate to Public Safety Administration (from any levels of government, nonprofit organizations, private companies that contract for public safety services, etc….).  Share the three most interesting & surprising things that you did not know, as well as what you perceive are the most important things for applicants to remember.  Describe challenges that applicants might face when choosing these careers.  This is not a research paper, so writing in the first person and offering websites as sources is acceptable.