What document should the first arriving officer complete to provide information about the incident?

The first arriving officer should complete the Incident Briefing form (ICS Form 201) to provide key information about the incident. This form serves as a crucial tool for summarizing the initial details of an incident, including the situation, the resources on scene, and the immediate needs. It is designed to capture important information that aids in coordinating the response effectively and ensures that subsequent responders can quickly understand the context of the situation.

The Incident Briefing form allows the first officer on the scene to document essential elements such as the incident type, size, and location, along with any recognized hazards, resources currently deployed, and any identified needs for additional resources or support. This information facilitates communication and helps establish a common operational picture among all responding units and personnel.

In contrast, the other forms listed serve different purposes. The Organization Assignment List (ICS Form 203) provides information about the roles and responsibilities of personnel assigned to the incident, while the Communications Plan (ICS Form 205) outlines the communication strategy and channels to be used during the incident response. The Incident Objectives (ICS Form 202) contains specific operational objectives for the incident response, but it is typically completed after the initial briefing to build on the information gathered in the ICS Form 201.