What began as a routine response to a brush fire on northern Idaho’s Canfield Mountain turned into a deadly attack Sunday after firefighters reported someone shooting at them while they battled the flames.

The 20-year-old man’s life appeared to have begun to unravel in the months before authorities say he fatally shot two firefighters and severely wounded a third.

A procession of emergency vehicles for two slain firefighters in Coeur D'Alene, Idaho, headed to the English Funeral Chapel.