What command would you give if you need to tell someone that you can no longer engage?

The command "Out of Service" is used to communicate that a unit or officer is no longer able to continue engagement for any reason, such as requiring a break, encountering an emergency, or changing operational status. This phrase clearly indicates to all parties involved that the individual will not be transmitting information or responding further, allowing them to adjust their expectations and operational activities accordingly.

It is crucial for effective communication to convey when an officer can no longer engage, as it maintains clarity within the chain of communication. Other options like "Stop Transmitting" might imply a temporary halt rather than a permanent disengagement, while "Receiving Well" and "Acknowledgement / OK" suggest ongoing communication and do not communicate the intent to disengage at all. Thus, using "Out of Service" clearly establishes that the individual cannot participate any further.