Command & Control
Who's in Charge?
Command and Control During an Active Shooter / Mass Casualty Incident
Successful active shooter and mass casualty response depends on more than stopping the threat. It requires a seamless transition of command from the Contact Team, to the Crisis Site, to the Secure Corridor, to Staging, and ultimately to Unified Command. Understanding who is in charge at each phase is critical to connecting “Stop the Killing” with “Stop the Dying.”
One of the most misunderstood aspects of active shooter response is who is actually in charge during the different phases of the incident. The answer changes as the incident evolves from Stop the Killing to Stop the Dying. Effective command and control requires recognizing that tactical control, corridor security, staging operations, and strategic incident command are often being exercised simultaneously by different leaders at different locations.
Phase 1: Initial Contact Team – Stop the Killing
Who Is in Charge?
The Contact Team Leader
During the initial response, the priority is immediate threat interdiction. Officers arriving first form a contact team (or solo-officer response) and move directly toward the threat.
The Contact Team Leader is responsible for:
- Movement toward the threat
- Tactical decisions
- Team communications
- Identifying and engaging the suspect
- Preventing unnecessary delays
At this point, traditional incident command is limited. The Contact Team Leader has tactical control of officers involved in the immediate threat engagement.
Command Priority
Neutralize the threat as rapidly as possible. No rescue operations can occur until officers create sufficient security to permit movement into the affected area.
Phase 2: The Suspect Location – The Crisis Site
Who Is in Charge?
The Officer or Supervisor Controlling the Crisis Site
Once the suspect is:
- Detained
- Surrendered
- Incapacitated
- Neutralized
the room or area containing the suspect becomes a crime scene and security site.
Responsibilities include:
- Confirming the suspect is no longer a threat
- Conducting secondary threat assessments
- Maintaining custody of detained suspects
- Preserving evidence
- Communicating threat status to command
This individual controls the immediate crisis site and reports status upward.
Critical Point
Just because the shooter has been stopped does not mean the incident is over. The next challenge is creating a safe path for rescue operations.
Phase 3: Hallway, Corridor, and Access Route Security
Who Is in Charge?
The Corridor Security Supervisor
One of the most critical positions in modern active shooter doctrine is the individual responsible for creating and maintaining a secure corridor.
Responsibilities include:
- Securing hallways and intersections
- Controlling access points
- Maintaining force protection
- Preventing unauthorized entry
- Monitoring for secondary threats
- Supporting casualty movement
This supervisor creates what many agencies refer to as a:
- Secure Corridor
- Rescue Corridor
- Secure Island
Why This Matters
Fire/EMS cannot operate safely without security. The secure corridor becomes the bridge between Stop the Killing and Stop the Dying. Without corridor control, casualty evacuation and medical treatment rapidly break down.
Phase 4: Resource Staging
Who Is in Charge?
The Staging Manager or Staging Area Supervisor
As additional resources arrive, somebody must control their deployment.
Responsibilities include:
- Tracking incoming personnel
- Accountability of resources
- Assigning rescue teams
- Deploying additional officers
- Coordinating mutual aid resources
- Preventing self-deployment
This position becomes increasingly important during large-scale incidents.
Critical Principle
Officers should never self-deploy to perceived problems. If a second crisis site develops, additional threats are reported, or Fire/EMS requests assistance, resources should be assigned through staging and command. This prevents abandonment of existing rescue corridors and secure islands.
Phase 5: Unified Command
Who Is in Charge?
Unified Command
Once sufficient command staff arrive, the incident transitions into Unified Command involving:
- Law Enforcement
- Fire Department
- EMS
- Emergency Management (when appropriate)
Law Enforcement Responsibilities
Law enforcement generally maintains responsibility for:
- Threat mitigation
- Force protection
- Secure corridors
- Rescue corridor security
- Intelligence gathering
- Crime scene management
Fire/EMS Responsibilities
Fire/EMS generally maintain responsibility for:
- Triage
- Treatment
- Casualty collection points
- Transportation
- Hospital coordination
Unified Command Responsibilities
Unified Command coordinates:
- Incident priorities
- Resource allocation
- Rescue operations
- Evacuation strategy
- Public information
- Medical surge management
The goal is to ensure all agencies are operating from the same plan and common operating picture.
The Modern Command-and-Control Challenge
Under the old “Secure the Scene” model, command was relatively straightforward:
- Law enforcement secured the entire scene.
- Fire/EMS remained staged.
- Medical operations began later.
Under modern Law Enforcement Rescue, Rescue Task Force, and Hybrid Rescue Models, command becomes significantly more complex because:
- Tactical operations continue.
- Rescue operations begin simultaneously.
- Casualty evacuation is occurring.
- Fire/EMS is operating inside the warm zone.
- Multiple supervisors may control different portions of the incident.
The most important command transition is not from patrol to SWAT—it is from “Stop the Killing” to “Stop the Dying.”
The agencies that manage this transition effectively will deliver lifesaving care faster, reduce preventable deaths, and improve overall survival during active shooter and mass casualty incidents.
Author
Paul Strauss MD