Which example does NOT require a personnel accountability report (PAR) to be initiated?

Initiating a Personnel Accountability Report (PAR) is a crucial aspect of maintaining safety and awareness during firefighting operations. In this context, a PAR is typically conducted under certain conditions to ensure that all personnel are accounted for and that they are safe.

The first choice, which involves a 20-minute elapsed time notification, does not inherently trigger a PAR. This notification is more of a routine check-in point during an incident, allowing incident commanders to assess operational progress and resources without the immediate need to account for every individual. It serves as a way to monitor the situation but does not specifically indicate an urgent or critical requirement to verify the status of crew members.

In contrast, the other scenarios describe situations where a PAR is essential. For example, if a firefighter enters a burning structure, it is imperative to confirm their status to ensure they have the necessary support and that all personnel are accounted for. Similarly, when crews finish an active incident, a PAR is conducted to finalize accountability and ensure a safe transition from emergency operations. Lastly, a team member's sudden radio silence could indicate a potential emergency, necessitating an immediate PAR to ascertain everyone's safety.

Each of these other situations posed a level of risk or uncertainty that justifies the need for a formal accountability check,