…the senior officer in charge said the room we were in was just a few seconds away from flashover… Last Fall my department had a training burn at a house that was slated for demolition. This was the first night of the burn and my company was first up to burn. We lit the fire in a back bedroom and fueled the fire with only a little bit of hay and one pallet. There was on burn about 10 minutes before it was my crews turn. The heat and gasses still remained in the house due to no ventilation. So we light the fire in the bedroom and wait about 20 seconds to let the fire build up. My team makes entry and the fire had grew so rapidly that it met us at the front door upon entry. We made our way down the narrow hallway with a 1 3/4 inch hand line and when we got about half way down the hallway we realized we were in trouble. The room we were in was about to flash over. The visibility was at zero and I couldn’t even see the reflectors on the persons in front of me air pack–even with my flash light shined on it. The smoke was banked down to about an inch off the floor and the flames were rolling over on the ceiling. The senior officer in charge said the room was just a few seconds away from flashover. 3 people got burned one with 3rd degree burns on his ears and one other firefighters bunker gear was toasted including the thermal layer and moisture barrier. Many things were wrong with this burn first off there was no ventilation horizontal or vertical, there was only one hose line in place, also we did not ventilate between fires so the heated gasses and smoke remained in the house further making the fire grow rapidly. Many changes were made the next night during the burn which included a safety line coming through the back door into the house and also ventilation was performed to ensure the fire did not get out of hand again. This was only a training exercise and there is no reason that any training fire should ever get that hot and out of control to where firefighters get burned or almost killed and our department will forever change its training methods based upon this close call.