According to this report a firefighter was hit by exploding ammo.
"In Latimer County (Oklahoma), the Buffalo Valley Fire Firefighters were fighting a fire in a dwelling that was full of guns and ammunition. The fire caused the ammunition to start popping off, and a Firefighter was shot in the face and head area.
The Firefighter was immediately treated and taken to a hospital in Tulsa. His condition has not been released."
OK FIREFIGHTER SHOT BY AMMO IN DWELLING FIRE
"In Latimer County (Oklahoma), the Buffalo Valley Fire Firefighters were fighting a fire in a dwelling that was full of guns and ammunition. The fire caused the ammunition to start popping off, and a Firefighter was shot in the face and head area.
The Firefighter was immediately treated and taken to a hospital in Tulsa. His condition has not been released."
OK FIREFIGHTER SHOT BY AMMO IN DWELLING FIRE