What is the definition of a Greater Alarm in the context of fire emergencies?

A Greater Alarm refers specifically to the escalated response level indicated by the number of alarms designated for a fire incident, which includes two, three, or four alarm fires. This classification signifies that the situation exceeds the capabilities of the initial response team and requires the mobilization of additional firefighting resources, equipment, and personnel. As the incident escalates, it becomes evident that multiple units and specialized teams are essential for effective management and control, highlighting the seriousness of the emergency.

In contrast, the other options represent different aspects of firefighting scenarios that don’t align with the precise definition of a Greater Alarm. While a major fire requiring additional resources is indicative of a serious situation, it does not specifically denote the numerical escalation aspect defined by alarms. Similarly, a fire needing specialized equipment might occur at any alarm level and doesn't define a Greater Alarm. Finally, a small fire that can be handled by one unit clearly indicates a lower level of response, far from the implications of what defines a Greater Alarm.