What does the term "overhaul" refer to in firefighting?

The term "overhaul" in firefighting specifically refers to the process of ensuring that the fire is completely extinguished. This involves systematic searching through the affected area to uncover hidden hotspots or smoldering materials that could reignite and pose a threat. Firefighters carefully check structural components, extinguish any remaining heat sources, and ensure that no embers are left that could lead to a resurgence of fire.

This step is critical because a fire might appear to be under control, but if any residual heat or burning materials are overlooked, they could lead to a dangerous situation later. Effective overhaul helps to maintain safety for both firefighters and the community. The other options address different aspects of fire response and preparedness but do not capture the specific meaning of overhaul in this context.