Backdrafts are extremely dangerous events that can occur during structure fires. They happen when a fire in an enclosed space consumes most of the available oxygen, causing combustion to slow while heat and flammable gases continue to build. If oxygen is suddenly reintroduced, such as when a door or window is ventilated these gases can ignite explosively, resulting in a violent blast. This can cause significant structural damage and serious injury or death to firefighters and others nearby. To prevent backdrafts, firefighters must assess conditions carefully before ventilation, look for signs like smoke puffing from openings, blackened windows, or no visible flame, and use controlled ventilation tactics to release heat and gases safely.

Yes, DE Shadoin, I agree. Backdrafts pose a serious threat to firefighter safety, as they can cause sudden explosions when oxygen is reintroduced into an oxygen-starved, superheated environment. Recognizing warning signs such as dark, pressurized smoke and smoke puffing from cracks is essential. Using vertical ventilation, thermal imaging, and maintaining a charged hose line are key tactics. Coordinated ventilation and fire attack, with controlled airflow and strong communication, are critical to preventing backdrafts and ensuring firefighter and structural safety.