What are some negative factors to overcome when investigating a fire scene?

When investigating a fire scene, some negative factors to overcome include the potential for hazardous materials, such as toxic smoke or unstable structures, which can pose safety risks to investigators. Additionally, the presence of debris can obscure evidence and complicate the identification of fire origins or accelerants. Weather conditions, such as rain or wind, can also hinder the investigation and affect the preservation of evidence. Finally, emotional distress from victims or witnesses can complicate communication and collaboration during the investigation.