How is an active shooter defined?

An active shooter is defined as an armed person who is using deadly force against others, typically in a confined and populated area. This definition emphasizes the immediate and lethal threat posed by the individual, marking a clear distinction between active shooter incidents and other types of gun-related crimes. Inactive shooter scenarios, the intent is generally to harm innocent victims indiscriminately, which heightens the urgency of response efforts.

This definition helps responders recognize the gravity of the situation, as it highlights the potential for escalation to mass casualties. Understanding this definition aids in developing appropriate responses and preparedness measures, focusing on the need for rapid intervention to mitigate harm to victims. The context of 'using deadly force' is crucial in differentiating between a situation that necessitates a specific response compared to other violent encounters or threats that may not involve direct harm to multiple individuals.