A fire engine and an ambulance are examples of what type of units?

The classification of a fire engine and an ambulance as primary and secondary units highlights their respective roles in emergency response. Primary units are typically the first responders to an emergency scene, tasked with immediate intervention, while secondary units provide support and can assist in follow-up care or additional resource deployment.

In this context, a fire engine is generally a primary unit that responds to fires and other emergencies requiring fire suppression. An ambulance serves as a primary unit as well, focusing on emergency medical care and patient transport. However, when the terminology of primary and secondary is applied in emergency response, it can also reflect the hierarchy of response where one unit's role is foundational, and the other provides support.

This helps clarify the collaborative nature of emergency response, where multiple types of units might be present, each fulfilling different yet vital functions to ensure public safety and effective incident management. Understanding these classifications is essential for telecommunicators, as it aids in coordinating responses appropriately based on the nature of the emergency.