What should not be done during an attack in balloon-frame construction?

In the context of attacking a fire in balloon-frame construction, using positive pressure ventilation (PPV) fans is problematic because it can inadvertently spread fire and smoke throughout the structure. In balloon-frame construction, void spaces exist between the floors and walls, allowing flames and smoke to travel unchecked. Utilizing PPV fans can force air into these voids, which may cause the fire to move to adjacent areas or even intensify the situation as it reaches fresh oxygen.

Effective tactics in such scenarios involve controlling airflow and understanding the unique characteristics of balloon-frame structures. Instead of using PPV fans, it is typically more effective to employ strategies like cutting off ventilation, which can help to limit the fire's spread, and using ground ladders to improve access and safety for firefighters and victims. Water curtains can also be useful for protecting exposures or creating a barrier against the fire. Therefore, understanding the proper ventilation techniques and the risks involved with PPV in balloon-frame construction is crucial for effective firefighting operations.