The first-arriving officer at the scene of a serious incident should __________ command.

• A. Establish
• B. Pass
• C. Transfer
• D. Defer

Answer: (A)

Centralized leadership on the scene is essential. The first-arriving officer should establish command to set up a formal incident structure, perform an immediate size-up, designate the incident command post, and begin coordinating safety, communications, and resource deployment. Establishing command creates a single point of authority and a clear initial plan, which helps prevent confusion and ensures responders work toward shared objectives. If command is passed or transferred too soon, or if it is deferred, there is no immediate, organized leadership on scene, which can lead to chaotic actions, gaps in safety, and miscommunication. Transfers of command occur later when a more senior or specialized incident commander takes over, not at the moment of arrival.