When approaching a crime in progress, what should an officer turn off to avoid announcing their presence?

When approaching a crime in progress, it is crucial for an officer to maintain a level of stealth and discretion to avoid alerting any suspects to their presence. Turning off emergency lights and sirens is the correct action in this context; these signals are designed to attract attention, which could compromise the safety of the officer and the success of the operation. By not using these features, officers can better assess the situation without scaring off suspects or putting themselves in immediate danger.

The other options, while relevant in various situations, do not directly relate to the immediate need for stealth when approaching a crime scene. Body cameras are important for documentation, and while officers may adjust their operation based on the surrounding circumstances, they still serve critical functions in transparency and accountability. Radio communications might be necessary to coordinate with other officers, and switching them off could hinder support and backup. Dash cameras operate in a similar vein; they capture events regardless of the officer's actions and help provide context for incidents.