The perimeter extends beyond the farthest piece of evidence identified during which examination?

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Establishing a scene perimeter is guided by where evidence is found on the outside of the structure. The exterior examination surveys the outside area and identifies evidence such as scorch patterns, vehicle tracks, or other indicators that lie beyond the building. The perimeter should extend beyond the farthest piece of evidence identified during this exterior assessment to ensure no potential evidence is left outside the secured zone, to protect the integrity of the scene, and to prevent contamination as investigators document and search the area.

Interior examination focuses on what’s inside the structure, which helps determine interior conditions and origin but doesn’t define the outer boundary. Debris examination looks at material outside or around the site but is not the primary step for setting the outermost perimeter. A search and rescue assessment aims to locate people and assess safety, not to establish the investigative boundary of the scene.