At an MCI, which of the following functions should be established first?

In the context of a Mass Casualty Incident (MCI), establishing incident command is the priority function to ensure an organized response. Incident command provides the necessary leadership and framework for coordinating the various resources and personnel involved in the operation. It ensures that all responders are working under a unified command structure, which fosters effective communication and decision-making.

By setting up incident command first, the entire response can be streamlined. It allows for the assessment of the situation, resource allocation, and the implementation of necessary procedures such as triage, logistics, and staging area establishment thereafter. A clear command structure helps in managing the chaos often associated with MCIs and prioritizes the safety and efficiency of both responders and victims.

Once incident command is effectively established, other critical functions, such as triage and logistics, can be developed to support the overall response effort.