Who is responsible to secure crime scene perimeter and establish restricted access during a deadly force incident?

• A. The on-scene supervisor
• B. The Sheriff
• C. The medical examiner's office
• D. The responding deputy

Answer: (A)

Controlling who can enter and keeping the scene secure is an on-scene leadership task. The on-scene supervisor takes command at the location and is responsible for establishing a defined perimeter, restricting access, and coordinating with investigators. They set up entry and exit points, designate zones, and ensure only authorized personnel handle evidence and safety operations. The first deputy on scene helps initiate containment, but the formal perimeter and access control sit with the on-scene supervisor as the incident progresses. The sheriff oversees the agency but isn’t typically on-scene managing the details, and the medical examiner's office handles post-scene duties like autopsy and forensic evidence after the scene is secured. So, the on-scene supervisor is the best answer.