Hylton J. G. Haynes and Gary P. Stein, “U.S. Fire Department Profile,” NFPA, January 2016, http://www.nfpa.org/news-and-research/fire-statistics-and-reports/fire-statistics/the-fire-service/administration/us-fire-department-profile; Steve Prziborowski, “Becoming a firefighter: 10 must-do things,” FireRescue1, February 1, 2010, https://www.firerescue1.com/Firefighter-Training/articles/755562-Becoming-a-firefighter-10-must-do-things/.