Which of the following actions is essential during overhaul operations?

During overhaul operations, maintaining a charged hose line is crucial for several reasons. Overhaul involves searching for hidden fires, hot spots, and ensuring that the fire is completely extinguished to prevent re-ignition. Keeping a charged hose line allows firefighters to quickly respond to any flare-ups or re-ignition that may occur during the overhaul process. This safety measure provides both protection for the firefighters and a means to effectively manage any residual fire hazards that may be present.

Additionally, the presence of a charged hose line is vital because it enhances the safety of personnel who might be working in potentially hazardous areas where unseen embers or smoldering materials could reignite.

While inspecting fire hydrants, evacuating the building, and starting demolition may be necessary in certain firefighting contexts, they do not directly pertain to the core activities and safety protocols essential during overhaul operations.