When does the size-up process begin in fire response?

The size-up process begins at the moment of dispatch because this is the first stage where information about the incident is gathered and assessed. It involves not only the initial details provided by the caller but also any pre-incident planning information, the nature of the response, potential hazards, and the resources that may be required.

From the moment firefighters are dispatched, they start to formulate a plan and strategize their approach based on the information available. This includes considering the type of incident, the number of resources needed, and the potential risks. A comprehensive size-up conducted post-dispatch allows firefighters to effectively prepare before they even arrive on scene, making it a vital step in ensuring safety and effectiveness during the response.

In this context, it's crucial to note that while other stages of the incident response—such as when the fire is detected, upon arrival, or after assessing hazards—contribute to the overall assessment and operational planning, the initial size-up begins at the point of dispatch. This establishes the foundation for the team's tactical approach as they proceed to the incident scene.