What is an important step in the fire investigation process upon arrival at a scene?

Establishing a perimeter and securing the area is a critical step upon arrival at a fire scene. This action helps to protect the integrity of the investigation by preventing contamination of evidence and allows for a controlled environment where investigators can work without interference. Securing the scene ensures that potential witnesses are kept at a safe distance, and any risks from ongoing hazards, such as fire or structural instability, are managed effectively. A secured area allows investigators to systematically approach the area, assess potential evidence, and conduct interviews with any available witnesses later in an organized manner.

This process also involves controlling access to the scene and limiting the number of people who can enter, which is essential to preserving the area for a thorough investigation. By doing so, investigators can maintain the chain of custody for evidence that is crucial to determining the cause of the fire and any related incidents.