What must be done when a serious incident occurs that requires supervisor presence?

When a serious incident occurs that necessitates the presence of a supervisor, establishing a command post and taking appropriate actions is crucial for effective incident management. The command post serves as a centralized location where information can be collected, analyzed, and disseminated. It allows supervisors to direct the response, allocate resources, and ensure that operations are being conducted safely and efficiently. This proactive approach enables a structured response to the incident, facilitating communication among officers on the scene and ensuring that appropriate measures are taken to control the situation.

The other options, while potentially relevant in certain contexts, do not address the immediate need for organized leadership and command at the scene. Waiting for a senior officer to assess the situation could lead to delays in response, which may exacerbate the incident. Documenting the incident for later review is important but comes after immediate response actions are prioritized. Similarly, coordinating with neighboring officers is necessary but should happen within the framework established by the command post to maintain order and efficiency. Therefore, establishing a command post is the most critical step when a serious incident requires supervisor presence.