In an active shooter / mass casualty incident, command doesn’t start at the top—it starts inside with the first officers and then transitions outward in phases. This is very different from Fire/EMS, where command is established from the exterior on arrival.
 

Phases of Command Transfer

Active Shooter / Mass Casualty Incident

1. Initial Interior Command (Crisis Site)

Who: First arriving officer(s)

Where: Inside the hot zone / point of contact

Key Actions:

• “I am Command” 
• Direct movement to stop the      threat (Stop the Killing) 
• Assign immediate roles if      possible: 
  • Contact team 
  • Rear security 
• Begin situational      awareness (SA)     of: 
  • Suspect(s) 
  • Victims 
  • Environment 

Reality Point:

➡️ This is often a solo officer acting as IC

➡️ Rank is irrelevant—initiative drives command

2. Expanding Interior Command (Tac-1 Concept)

Who: First wave officers inside

Where: Still inside the crisis site

Key Actions:

• Transition from pure contact      → control      of the interior 
• Informally establish: 
  • Room boss / Hall boss /       Floor boss 
• Communicate: 
  • Suspect status (down /       contained / fled) 
  • Victim locations 
• Begin thinking beyond      shooting: 
  • “Where are my victims?” 
  • “Where will evacuation go?” 

Critical Shift:

➡️ From Stop the Killing → Preparing to Stop the Dying

3. Exterior Command Establishment

Who: First supervisor or designated officer outside

Where: Exterior, just outside the crisis site

Key Actions:

• Establish formal Incident      Command (IC) 
• Identify and communicate with      interior (Tac-1) 
• Begin: 
  • Perimeter control 
  • Resource tracking 
  • Staging location 

Critical Concept:

➡️ Command is NOT taken blindly

➡️ It is received from interior awareness (Tac-1)

4. Command Transfer to Exterior (Staging Manager Role)

Who: Exterior IC / Staging Manager

Where: Just outside crisis site

Key Actions:

• Assume operational      coordination from interior IC 
• Maintain linkage with Tac-1 
• Develop: 
  • Secure corridors 
  • Casualty evacuation pathways       
  • Awareness of secondary       threats 
• Track: 
  • Incoming officers 
  • RTF readiness 

This is the MOST missed phase operationally

➡️ Prevents the “Blue Tsunami”

➡️ Converts chaos → organized response

5. Unified Command (Law + Fire/EMS)

Who: Law Enforcement IC + Fire/EMS Command

Where: Established command post (Cold Zone)

Key Actions:

• Formal Unified      Command 
• Align priorities: 
  • Security (LE) 
  • Medical (Fire/EMS) 
• Deploy: 
  • Rescue Task Forces (RTFs) 
• Establish: 
  • Ambulance Transfer Point       (ATP) 
  • Triage and transport 

Framework:

👉 S – Security

👉 I – Incident Command (Unified)

👉 M – Medical + Movement

6. Operational Control & Medical Evacuation

Who: Unified Command with Ops / Med branches

Key Actions:

• Coordinate: 
  • RTF entry into warm zone 
  • Evacuation flow 
• Maintain: 
  • Secure corridors 
  • Force protection 
• Prioritize: 
  • Rapid movement to definitive       care 

End State Goal:

➡️ Victims to higher level of care ≤ 30 minutes

🔁 Key Teaching Point (Your Doctrine)

Command flows:

Interior → Transitional (Tac-1) → Exterior → Unified Command

NOT:

❌ “Big bosses show up and take over immediately”

⚠️ Common Failure Points (Great for Slide Add-On)

• Exterior command established without      interior SA 
• No clear Tac-1 → IC      communication 
• Delayed staging manager → Blue Tsunami      
• RTF delayed waiting for      “perfect scene” 
• No defined evacuation      corridors 

🔥 One-Line TacMed Takeaway

👉 “Command starts inside the gunfight and must be deliberately transferred outward to save lives.”

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