 structure fire. In the process of extinguishing the fire, a Blackfoot firefighter was injured when part of the structure collapsed. The firefighter was airlifted to Eastern Idaho Regional Medical Center and is in stable condition. A fire near the foothills of Ammon was started by fireworks. That's according to law enforcement and firefighters. It happened Tuesday night near Sunnyside Road and East Crown Crest. The fire was quickly put out and was estimated to be a little over an acre. Deputies found Roman candles.