When is a Personnel Accountability Report (PAR) utilized?

A Personnel Accountability Report (PAR) is utilized specifically to account for all personnel after tactical changes have occurred during firefighting operations. This process is crucial for ensuring the safety and accountability of firefighters at the scene of an incident. When there are significant changes in tactics, such as transitions between different phases of action or when units are reassigned, it is imperative to verify and confirm the status of all personnel involved. This helps to identify if any firefighters are missing, trapped, or in need of assistance, allowing for prompt action to be taken to ensure their safety.

The other choices do not align with the primary purpose of conducting a PAR. Assessing equipment needs relates to logistics and readiness but does not focus on personnel accountability. Evaluating fire extinguishment progress deals with the effectiveness of the firefighting efforts rather than the status of the personnel. Managing oxygen supply levels pertains to the operational aspects of firefighting but does not address the critical need to ensure all team members are accounted for during dynamic tactical situations.