What is the first duty of a first responder at a scene?

• A. Ensure safety and secure the crime scene
• B. Photograph the scene
• C. Collect physical evidence
• D. Analyze bloodstain patterns

Answer: (A)

Safety and securing the scene take priority for a first responder. On arrival, the responder must quickly assess hazards, provide any needed medical aid without causing further disturbance, and establish a perimeter to prevent entry or tampering. This protects people and helps preserve evidence in its original state, which is crucial for a reliable investigation. Once safety and security are in place, documentation and evidence collection can proceed in an orderly, traceable manner, with analyses carried out under controlled conditions as appropriate. Neglecting scene safety and security can put people at risk and compromise the integrity of the evidence.