Wildland fire fighters are required to pass an “arduous duty” physical fitness test annually to help ensure that they are prepared for the physical nature of the job. Unlike structural fire fighting, wildland fire fighting often requires long work shifts that may last up to 14 continuous days, and often takes place in environments that are challenging with regard to temperature and terrain. Because of this difference, researchers cannot assume that study findings among structural fire fighters would apply to wildland fire fighters. Because wildland fire fighter-specific fatality data are often sparse or combined with information on all U.S. fire
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