During which phase must the TERT team leader complete checks-out?

The phase during which the TERT team leader must complete check-outs is during deactivation. This is a critical step in the protocol. Deactivation involves formally concluding the team's operations, which includes ensuring that all tasks have been documented, equipment has been accounted for, and team members have all received their exit briefings. This process is crucial for maintaining accurate records and for providing a comprehensive review of the incident response.

Additionally, completing check-outs during deactivation helps assess the team's overall performance, identify lessons learned, and prepare for future operations. It ensures a smooth transition out of the operational phase and reinforces accountability among team members. Furthermore, this phase allows for the collection of feedback, which is essential for informing any after-action reports and planning for future responses.

In contrast, check-outs occurring in the other phases listed might disrupt the focus on incident management and recovery efforts. For example, during initial deployment, the priority is to establish command and coordination rather than complete check-outs. Therefore, deactivation is the appropriate time for this activity.