Which action is NOT part of the scene size-up?

The scene size-up is an essential component of the initial assessment in emergency situations, as it involves gathering critical information about the environment, safety, and potential hazards before approaching a patient. Rapidly assessing a patient's respiratory status falls under the primary assessment and is conducted after the scene size-up has been completed. This step specifically focuses on evaluating the patient's immediate medical condition rather than assessing the scene itself.

By recognizing the need to evaluate the surroundings, including the position of a crashed motor vehicle and identifying any potential hazards (such as needing fire personnel), responders can ensure safety and make informed decisions. Asking a neighbor to secure the patient's dog may also relate to ensuring a safe environment before providing care. However, the primary action that does not belong to the scene size-up is the rapid assessment of a patient's respiratory status, as this comes later in the patient assessment process.