What is the first step in the size-up process during an incident?

The first step in the size-up process during an incident is pre-incident information gathering. This stage involves collecting and analyzing relevant data before an incident occurs, which can include understanding building layouts, identifying hazards, reviewing historical incident reports, and assessing resources available in the area. Gathering this information is crucial as it lays the groundwork for effective decision-making during an emergency response.

Having a solid understanding of the environment and potential challenges allows the incident commander and the response team to formulate a plan that is both safe and effective. This preliminary data informs the tactics and strategies that will be employed as the incident unfolds, making it a foundational aspect of the size-up process. By prioritizing this step, the response becomes more streamlined and informed, ultimately contributing to a successful outcome.