What does Signal 28 indicate for law enforcement units?

Signal 28 is a code used in law enforcement communications to indicate the status of a location or situation. Specifically, it means "Post secure." This signifies that a particular area, such as a crime scene or checkpoint, has been secured and is safe for law enforcement personnel to proceed with their activities without the risk of interference or disturbance from outside entities.

Understanding this code is essential for effective communication among law enforcement units. When a post is secure, it allows officers to focus on their tasks or investigations without the added concern of potential threats or interruptions. This signal is often used in situations where safety and operational integrity are priorities.

The other options reference different scenarios. For instance, "Request backup" would indicate that additional assistance is needed. "Proceed with caution" implies there may be hazards present that require careful navigation. "Clear the area" indicates the necessity of ensuring that no unauthorized personnel are present. Each of these signals serves a distinct purpose and is crucial for maintaining safety and order during law enforcement operations.