Who is ultimately responsible for all aspects of the incident response?

The Incident Commander plays a crucial role in the incident response by having ultimate responsibility for all aspects of that response. This includes overseeing the overall management of the incident and ensuring that objectives are established and achieved while maintaining the safety of responders and the public. The Incident Commander sets the strategy for response actions, allocates resources, and coordinates among various agencies involved in the incident.

While the other roles such as the Planning Section Chief, Operations Chief, and Logistics Section Leader have specific responsibilities and areas of focus within the incident command structure, these positions report to the Incident Commander. They handle strategic planning, operational tactics, and logistics, respectively, but all of their activities are conducted under the direction and authority of the Incident Commander. Therefore, the accountability for the incident ultimately rests with the Incident Commander, making this the correct answer.