Which of the following activities should NOT occur during the scene size-up?

During the scene size-up, the primary focus is on quickly assessing the overall situation to ensure the safety of everyone involved and to gather crucial information that will guide further actions. This includes ensuring the safety of the scene, assessing the mechanism of injury, and estimating the number of victims.

Providing airway management is a specific medical intervention that typically occurs after the initial assessment and when immediate care needs to be delivered to a victim. This step is part of the patient care phase and is done after the scene is declared safe and an initial size-up is conducted. Therefore, airway management should not occur during the scene size-up, which is intended to prioritize scene safety and gather initial information rather than provide direct medical care. This distinction is crucial to maintain an organized and effective emergency response.