Which zone is designated for personnel actively dealing with the emergency?

The hot zone is designated for personnel actively dealing with the emergency because this area is typically characterized by immediate danger and requires strict control measures to protect those involved in the operation. Firefighters and other emergency responders working in the hot zone are directly engaged with the incident, whether it's combating a fire, handling hazardous materials, or performing rescues.

This zone is crucial for operations that involve a high level of risk, as it is where the most hazardous conditions are present, and personnel must wear specific protective gear to ensure their safety. By contrast, the cold zone is removed from the dangers of the emergency and is used for staging and support; the warm zone serves as a transition area for decontamination and equipment management. Understanding these distinctions helps responders maintain safety protocols while effectively managing emergencies.