Secure perimeter.

Secure perimeter.

• A. Secure perimeter
• B. Distance yourself and notify authorities
• C. Ephedrine or pseudoephedrine used in synthesis
• D. Brake cleaner, acetone, and camp fuel

Answer: (A)

Securing the perimeter is about creating a controlled safety zone at the scene. Establishing a clear boundary and controlling who can enter prevents harm to people nearby, keeps witnesses and suspects from contaminating or disturbing evidence, and gives responders space to work safely and efficiently. While it's important to notify authorities and keep a safe distance, the immediate, proactive step that protects both people and the integrity of the scene is to secure the perimeter. The other options describe materials or potential indicators you might encounter, but they don’t address the action of establishing a controlled area to manage the incident.

Securing the perimeter is about creating a controlled safety zone at the scene. Establishing a clear boundary and controlling who can enter prevents harm to people nearby, keeps witnesses and suspects from contaminating or disturbing evidence, and gives responders space to work safely and efficiently. While it's important to notify authorities and keep a safe distance, the immediate, proactive step that protects both people and the integrity of the scene is to secure the perimeter. The other options describe materials or potential indicators you might encounter, but they don’t address the action of establishing a controlled area to manage the incident.