In a radiation scenario, what is the primary goal when dealing with initial threats?

In a radiation scenario, establishing a secure perimeter is crucial as it helps to protect both responders and the public from potential exposure to harmful radiation. This action creates a controlled environment where emergency personnel can operate safely. By securing the area, responders can mitigate the risk of contamination spreading beyond the designated zone and ensure that only authorized personnel and equipment are allowed access.

Additionally, a secure perimeter allows for a systematic approach to managing the situation, including the coordination of emergency services, establishing communication with the public, and facilitating efficient victim assessment and treatment once the area is deemed safe. This step is foundational because it lays the groundwork for all other operations in a radiation emergency, such as monitoring radiation levels and caring for victims.