During which phase is 'Size Up' evaluated?

The 'Size Up' phase is evaluated as a continuous process throughout the duration of an incident. This ongoing assessment allows responders to gather and analyze information about the situation, such as the fire's intensity, the structural integrity of the environment, potential risks, and available resources. Being a continuous process means that firefighters must remain vigilant, reassessing conditions as they evolve, which can significantly influence decision-making and operational tactics. This dynamic approach ensures that strategies are adapted to effectively manage the incident as new information becomes available.

In contrast, conducting 'Size Up' only after, before incidents, or solely during training sessions would not provide the necessary adaptability and responsiveness required in real-life emergency situations. The nature of emergencies often involves rapidly changing conditions, underscoring the importance of continuously evaluating the circumstances to achieve the best outcomes.