Which of the following is considered physical evidence at a fire scene?

Physical evidence at a fire scene refers to tangible items that can be directly observed and collected for analysis. Explosion debris is categorized as physical evidence because it is a physical representation of an incident that occurred at the scene. This material can provide crucial information about the nature of the explosion, including the potential causes and contributing factors. Analyzing debris can reveal evidence of combustible materials, accelerants, or structural failures, all of which are essential for understanding the circumstances surrounding the fire and for establishing a forensic timeline.

In contrast, witness testimonies consist of subjective accounts of what individuals saw or experienced, which do not constitute physical evidence. Photographs of the scene, while important for documentation and analysis, are visual representations and not physical elements in and of themselves. Firefighter reports, although critical for operational insights and documenting actions taken during the incident, are also not considered physical evidence as they are written records rather than physical materials present at the fire scene.