What is the definition of Size-Up in the context of Incident Command?

In the context of Incident Command, Size-Up refers to the initial assessment process that involves identifying and evaluating the incident's conditions, risks, and necessary resources. This critical first action step is essential for establishing situational awareness and understanding what challenges may be faced during the incident response.

During the Size-Up, responders gather information about the scene, such as the type and scope of the incident, potential hazards, the number of individuals involved, and the resources already available or required. This comprehensive evaluation is foundational for effective decision-making, resource allocation, and the formulation of a strategic response plan.

By focusing on problem identification right from the start, Size-Up ensures that the Incident Commander can prioritize actions based on the most pressing needs of the situation, ultimately leading to a more organized and effective response.