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

The term "overhaul" in firefighting specifically refers to the process of searching for hidden fires or extinguishing hot spots after the main body of the fire has been put out. This step is crucial because it ensures that all potential sources of re-ignition are addressed, which can often be found in concealed spaces or within structural elements. Firefighters perform overhaul to prevent flare-ups that could lead to a resurgence of the fire, which can be dangerous and complicate recovery efforts.

This phase of firefighting involves a careful examination of the fire scene, sometimes requiring the removal of debris or materials that could hide lingering heat. The focus is on thoroughness and safety to ensure that the area is completely secured against further fire activity.

In contrast, the other options pertain to different aspects of firefighting; they do not encapsulate the specific action of ensuring all potential fire hazards are addressed post-expenditure of the main flames.