Which option is NOT considered a purpose of overhaul?

The purpose of overhaul in firefighting involves a series of actions taken after the main fire has been extinguished to ensure that no remaining hot spots could reignite the fire. Among the key objectives are extinguishing any remaining fires and preventing rekindling, both of which are critical to ensure the incident is fully controlled and safe.

Identifying the fire's point of origin is also an important aspect of the firefighting process, especially for determining the cause of the fire and helping in investigations. This is part of a broader effort to understand how to prevent similar incidents in the future.

Adequate ventilation of confined areas is a consideration during active firefighting to ensure that smoke and heat are cleared and that firefighters can safely operate. However, it does not fall under the primary purposes of overhaul, as this phase occurs after the fire has been extinguished and the emphasis shifts more towards ensuring all fire residues are dealt with, rather than providing airflow. Therefore, the correct choice is identified as not being a purpose of overhaul.