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Evaluating the Scene
Define the Extent of the Scene
Source: National Institute of Justice, Fire and Arson Scene Evidence: A Guide for Public Safety Personnel
Mark or reevaluate the perimeter and establish or reassess the procedures for controlling access.
Inspect and protect adjacent areas—even areas with little or no damage—that may include nonfire evidence (e.g., bodies, blood stains, latent prints, tool marks) or additional fire-related evidence (e.g., unsuccessful ignition sources, fuel containers, ignitable liquids).
Make a preliminary scene assessment (an overall tour of the fire scene to determine the extent of the damage, proceeding from areas of least damage to areas of greater damage) to identify areas that warrant further examination, being careful not to disturb evidence.