What is the first step in the order of crime scene processing?

The first step in the order of crime scene processing is to conduct a walk-through. This initial assessment allows law enforcement personnel to get an overview of the crime scene, understand the context, and identify areas that require special attention. During the walk-through, the responding officers can note any immediate threats, plan for the preservation of evidence, and formulate an investigation strategy. This preliminary examination is critical as it lays the groundwork for subsequent steps, such as photographing the scene and collecting physical evidence, ensuring that no vital information or evidence is overlooked. By establishing a clear understanding of the crime scene from the onset, investigators can effectively document and process the scene, leading to a more organized and systematic approach to the investigation.