What is meant by "firefighter fatalities and injuries"?

Line of duty deaths may be the result of incidents linked to firefighter training, vehicle crashes, and other fire service activities. USFA tracks and collects information on the causes of on-duty firefighter fatalities that occur in the United States. Fatal and non-fatal injuries are also tracked and described by the National Fire Protection Association (NFPA).

Firefighter fatalities and injuries can be linked to behavioral and mental health events that occur during firefighting activities. Behavioral and mental health events include post-traumatic stress, depression, and suicide. Cancer is also a significant concern for firefighters and is related to exposures to carcinogenic chemicals and particulate exposures related to firefighting activities.