Investigation report into Knowles Fire firefighter deaths released

The U.S. Department of the Interior released its investigation into the June 27 Knowles Fire burnover that killed four wildland firefighters and injured another. The report attributed the deaths of Emily Barker, Nick Hutcherson, Nathan Matthews and Sydney Watson to the cumulative interaction of multiple factors, including extraordinary fire behavior. Interior Secretary Doug Burgum said the department would apply lessons from the investigation to improve firefighter safety.