MCI Response Evolution

In 2010, law enforcement training emphasized a singular priority during an Active Shooter/Mass Casualty Incident: while active killing is occurring, bypass the wounded and neutralize the threat. That principle remains sound.

However, the follow-on actions often created unintended consequences. Once the threat was down, officers were taught to continue clearing the structure in search of additional suspects — often without any stimulus such as ongoing gunfire, new victims, or actionable intelligence. This led to a critical problem: resources were being committed to chasing unknown threats instead of saving known lives.

Every minute spent searching for a non-existent secondary suspect is a minute lost for victims who could survive with immediate intervention.

Current Data

• →~97.5% of active shooter events involve a single assailant
• →When multiple attackers are involved, they are typically co-located, not dispersed throughout the structure
• →Clearing without stimulus introduces unnecessary risk and exposes officers to ambush while delaying life-saving care

This is not just a tactical shift — it is a command decision. Recognizing the transition point and reallocating resources accordingly is what saves lives.