Identify the four domains of CBRN defense.

• A. Prevention, Protection, Mitigation, and Response
• B. Detection, Containment, Recovery, and Education
• C. Protection, Decontamination, Evacuation, and Communication
• D. Prevention, Detection, Response, and Recovery

Answer: (A)

The four domains of CBRN defense are Prevention, Protection, Mitigation, and Response. This framework organizes activities from before an incident through after it, ensuring a comprehensive approach.

Prevention focuses on stopping incidents before they occur, using things like threat assessment, intelligence, security measures, and robust procedures to reduce opportunities for a CBRN event. Protection aims to reduce the vulnerability and exposure of people and assets when a risk cannot be entirely eliminated, through protective equipment, engineering controls, barriers, and secure systems. Mitigation deals with lessening the impact if an incident happens, including preparedness planning, resilience measures, decontamination capabilities, medical countermeasures, and continuity of operations to limit damage. Response covers actions taken during and immediately after an incident to protect life and limit harm—from detection and alerting to containment, decontamination, medical care, and information management to support recovery.

Other options mix in items that are tactical capabilities or phases within the overall plan (like detection, recovery, education, evacuation, or decontamination) rather than naming the four broad domains themselves. Those elements fit inside the Prevention, Protection, Mitigation, or Response domains rather than standing as separate domains.