What critical action should be taken when arriving at a fire scene?

Conducting a 360-degree size-up of the scene is a critical action upon arriving at a fire scene because it provides firefighters with essential information about the situation. This assessment allows responders to evaluate the extent of the fire, identify potential hazards, and assess the structure's stability. It also helps in recognizing the best access points and egress routes for personnel and potential victims.

A thorough size-up involves observing smoke conditions, flame behavior, and possible victims' locations, which can greatly influence tactical decisions. Understanding the layout of the building, including floors, windows, doors, and any potential collapsing hazards, is vital for safe and effective firefighting operations. This comprehensive view helps establish an overall strategy and ensures that resources are appropriately allocated based on real-time observation rather than assumptions.

While beginning firefighting immediately may seem urgent, it is important to gather information to avoid unnecessary risks. Setting up a command post and notifying the media are also important elements of incident management but typically occur after an initial size-up to ensure an organized response.