Ventilation-Induced Flashover | Texas Burn & Learn In this short video from our Max Fire Box Burn & Learn class at Bellville, Texas Fire Department, we’re set up in a two-story configuration. As we start to open the building, we experience a ventilation-induced flashover — a powerful demonstration of the importance of killing the heat and understanding the reach and effectiveness of your hose stream. The Max Fire Box Phase II allows firefighters to safely observe, control, and repeat these condi