Which of the following is an essential function of the Overhaul process?

Preventing re-combustion is a critical function of the overhaul process because it ensures that any remaining hot spots within the structure are fully extinguished to avoid reignition of the fire. During overhaul, firefighting personnel meticulously search for smoldering materials that have the potential to catch fire again, as even small embers can reignite and lead to a dangerous situation. This stage includes moving debris, checking hidden spaces, and ensuring that all materials involved in the initial fire have been thoroughly extinguished.

In contrast, maximizing the fire response, analyzing the fire origin, and administering first aid, while important aspects of firefighting operations, are not specific to the overhaul process. They pertain to fire suppression tactics, investigation efforts, and emergency medical services, respectively, and therefore do not fulfill the unique function of preventing re-combustion that is central to the overhaul phase.