Most people associate ICS with hurricanes, wildfires, and mass casualty events. That's the wrong mental model.
One of the first lessons of ICS is that it applies to every incident, regardless of scale. There is always an Incident Commander in function, even if not by name. The two-person ambulance crew responding to a simple gravitational emergency (fall victim/lift assist) operates under ICS just as much as a multi-agency response operating under Area Command.
That scalability is the whole point.
When you combine ICS with an all-hazards approach to policy, you get a structure that expands or contracts based on intensity, severity, and acuity without requiring a new framework every time conditions change.
The underappreciated part is that this logic doesn't stop at emergency response. Business operations, security programs, crisis communications and any other environment that requires coordinated action under pressure benefits from the same architecture.
ICS was built for emergencies, but it turns out it works for a lot more.