During size up, the incident commander does not do which of the following?

The correct response highlights that during the size-up phase, the incident commander focuses on assessing the overall situation and understanding the scope of the incident. Determining the exact definition and location of the problem can be beyond what is feasible at this initial stage. The size-up is more about gathering information, evaluating risks, and making initial strategic decisions based on the observable conditions.

In this context, the incident commander will be examining existing information—like situational awareness, resources, and potential hazards—to guide their decisions effectively. They will also determine what support is needed, decide the optimal positioning of apparatus for effectiveness, and outline the necessary actions that align with their analysis of the environment. The exact nature of the problem may evolve as more information becomes available, making it less critical at the outset.