Which statement is a component of the Defensive Strategy?

• A. Defensive Strip (Conventional)
• B. Rolling smoke indicator
• C. Offensive Hole
• D. Heat Hole

Answer: (A)

Defensive strategy in vertical ventilation centers on controlling the fire from outside and protecting any potential occupants or exposures. A Defensive Strip is a standard exterior ventilation method that removes roof material in a controlled, conventional way to create a long vent opening along the roof. This opening lets heat, smoke, and hot gases escape to the exterior, lowers the internal heat load, and helps keep interior crews safe while the attack is managed from outside or from a safer position. It’s predictable, manageable, and aligns with a defensive posture that prioritizes preventing interior escalation.

Rolling smoke indicator is just a way to assess conditions and isn’t a ventilation tactic. An offensive hole is opened to vent from inside to support interior fire attack, which belongs to an offensive approach. A heat hole relates to venting hot gases but isn’t described here as a defined component of the defensive strategy.