In firefighting, what does "overhaul" refer to?

In firefighting, "overhaul" refers to the process of extinguishing the final flames and identifying any remaining hot spots that could reignite. This step occurs after the main body of the fire has been suppressed and is crucial to ensure that the fire is fully extinguished. During overhaul, firefighters will often systematically check the area to make sure no embers or flames are present, often using thermal imaging cameras or other tools to locate hidden heat sources.

While other activities, such as cleaning the area or investigating the cause of the fire, are important parts of the firefighting operation, they do not encapsulate the primary function of overhaul. The focus specifically lies on ensuring complete extinguishment by addressing any last traces of fire, making it a critical step in preventing re-ignition and ensuring safety after the main firefighting effort is complete.