Where should companies relieved by the Incident Commander report?

The correct choice is that companies relieved by the Incident Commander should report to their own quarters. This is established as standard protocol in many fire service operations. The rationale behind this procedure is that returning to their own quarters allows firefighters to regroup, restock their equipment, and be ready for any subsequent calls or tasks. Each company is best suited to manage its own resources and personnel effectively within their designated quarters, ensuring they can prepare for future incidents or assume readiness for another assignment.

In contrast, reporting to headquarters or a training facility introduces logistical challenges and may disrupt the efficiency of operations, as resources would not be immediately available in their operational area. Additionally, returning directly to the fire station is less practical since the station may not have the same level of preparedness or resource management tailored specifically for that particular company.