What term describes the first-due arrival of assigned resources?

The term that accurately describes the first-due arrival of assigned resources is deployment. In the context of emergency management and firefighting, deployment refers to the strategic placement and movement of personnel and equipment to effectively manage a situation. It entails not just getting resources on the scene, but also ensuring they are prepared and positioned to tackle the incident at hand.

When resources are deployed, it signifies an organized response effort, ensuring that the right units are in the right place at the right time to address the emergency. This involves coordination, communication, and understanding of the incident dynamics to optimize response effectiveness.

The other terms mentioned do not specifically capture the essence of this organized response. Arrivals may refer to any units reaching the scene without the connotation of preparation for action. Distribution generally pertains to the allocation of resources rather than their arrival. Arrangement is vague in this context and does not convey the same operational readiness implied by deployment. Thus, deployment stands out as the precise term for the timely arrival and readiness of resources at an incident site.