What should be done immediately upon the command "Cease Fire"?

When the command "Cease Fire" is given, the immediate action required is to stop all shooting without delay. This command is crucial for ensuring the safety of all individuals present in the shooting environment, whether on a range or in a training scenario. Ceasing fire allows for a calm assessment of the situation, enabling the Range Safety Officer or designated authority to evaluate any potential hazards and ensure that everyone can move to safety if necessary.

This response is vital not just for the safety of shooters but also for any personnel or bystanders in the vicinity. It's a standard practice in all firearm training disciplines to prioritize safety and control the environment when such commands are issued. Thus, stopping all shooting immediately is the only responsible reaction to maintain a safe and controlled setting.