Defence zones

3 (assessment zone, warning zone, threat zone)

Outermost defense zone which typically does not have boundaries.

Security forces must classify contacts in the warning zone as either threats or non-threat. Classification measures and warning zone parameters are based on specific threats.

Innermost layer of defense. All personnel, vehicles and vessels must be classified as threat or non-threat before interning zone. To neutralize threats, the threat zone must be organized to bring maximum destructive fire.