Which step from the response timeline is not part of the initial source spots?

Demobilization is not considered part of the initial source spots because it occurs after the initial response has taken place. The initial source spots, which are crucial during the early stages of an emergency response, focus on activating resources, initiating response actions, and assessing the situation. These steps are fundamental in setting up an effective and timely response to an emergency, ensuring that responders understand the situation and can mobilize resources to effectively manage the event.

Demobilization, on the other hand, is a later stage that involves the orderly and systematic return of resources and personnel once the emergency has been managed or resolved. This step is critical for ensuring that resources are appropriately accounted for and that responders can transition back to regular operations. Thus, it does not fit into the context of initial source spots, which are designed for immediate action and assessment.