In what scenario would firefighters use the "defensive attack" strategy?

The "defensive attack" strategy is employed in situations where conditions are too dangerous for firefighters to engage in a direct attack on a fire. This strategy focuses on protecting exposure areas, preserving property, and ensuring the safety of both firefighters and civilians. In scenarios where the fire is out of control or presents significant hazards, such as structural collapse, intense heat, or threatening toxic exposures, a defensive approach allows firefighters to use aerial devices, water streams, or other methods from a safe distance rather than putting themselves directly in harm's way.

In contrast, the other scenarios described do not warrant a defensive attack. A direct attack would be feasible when conditions are safe, and small, manageable fires can often be engaged directly to prevent escalation. When water supply is limited, it may affect strategies employed, but it does not inherently lead to a defensive strategy unless it also coincides with dangerous conditions.