What is a crucial first step when arriving at a crime scene?

Documenting the scene thoroughly is a pivotal first step when arriving at a crime scene because it ensures that the initial condition of the scene is recorded accurately before any evidence is altered or disturbed. Proper documentation includes taking photographs, creating sketches, and noting the positions of evidence, victims, and anything relevant to the investigation. This step is critical as it provides a permanent record that can be referred to later in court or during the investigation.

Additionally, effective documentation helps establish the context of the crime scene for follow-up investigations, assists in maintaining the integrity of the evidence, and serves to guide subsequent actions, such as evidence collection or witness interviews. If this step is overlooked, it could severely hinder the investigative process and impact the outcome of the case.