Which type of message is included in the three basic categories of public information?

The three basic categories of public information typically include different forms that are essential for effective communication during an incident. Action messages are particularly important as they convey urgent information related to ongoing actions that need to be taken, whether it is instructions for the public or updates for responders. This category is crucial in emergency situations where clear and prompt communication can guide individuals on what actions to take to protect themselves and mitigate risks.

In contrast, narrative reports or updates to local authorities may serve informative purposes but do not directly call for the public's immediate engagement or action in the same way that action messages do. Strategic assessments tend to be higher-level analyses that focus on long-term planning and may not provide immediate, actionable information. Hence, the emphasis on action messages indicates a direct link to the communication objectives of keeping the public informed and involved in response efforts.