Emergency Response and Incident Command
Massachusetts requires NIMS compliance, and this domain tests command structure under pressure, when the first five minutes decide the outcome.
Core rules
- ICS: a single Incident Commander unless jurisdictions or functions require Unified Command. Command transfers by briefing, not by radio announcement alone.
- Span of control is 3 to 7, target 5. Beyond that, add divisions, groups, or branches.
- Establish command, scene security, staging, and a medical branch early; document on ICS 201 (incident briefing) and ICS 214 (activity log).
- MEMA coordinates statewide support; the Commonwealth Fusion Center handles threat information; CoMIRS and BAPERN provide interoperable radio traffic.
- Active shooter: the first officers form a contact team and move to the threat; rescue task forces follow with medical providers under force protection.
- Mass casualty triage uses START; a transport group officer, not individual ambulance crews, controls movement to hospitals.
- Hazmat: awareness-level officers isolate, deny entry, and notify; entry requires technician-level teams.
- Mutual aid is requested through the designated channel and logged with times.
Worked example
A school reports a person with a weapon. The first patrol unit does not wait for a perimeter and moves toward the threat with two officers. A lieutenant establishes command at a safe location and assigns inner perimeter, traffic, staging, and a media point. Fire and EMS form a rescue task force with two officers. Command requests the regional tactical team through dispatch and logs times on the ICS 214. The school resource officer supplies the floor plan.
Traps
Two commanders giving orders; officers self-deploying toward sirens; and designating a staging area only after mutual aid has already arrived.