If you see rollover occurring, what actions do you take?

• A. Direct attack
• B. Ventilation
• C. Indirect
• D. Cooling

Answer: (C)

Rollover means the hot gases near the ceiling have ignited and are rolling across the space. The safest, most effective response is an indirect attack that cools the hot gas layer without introducing more air. From a protected position, use a wide fog pattern to the ceiling and upper portions of the space to absorb heat, lowering the temperature and preventing flashover. This approach protects you from the intense heat and helps control the fire before it can intensify.

Direct attack would push flames into the fuel layer and expose you to extreme heat; ventilation would feed the fire by supplying more oxygen and can worsen rollover; cooling is a result of the indirect attack, as you reduce heat by cooling the gas layer rather than trying to reach the flames directly.