9. Know when to be seen and when to be heard – It is important for you to use good judgment and common sense when you patrol at night. At many sites you will want to patrol quietly and walk in the shadows close to buildings. If you are patrolling in a vehicle, minimize any noise from your engine, brakes and tires, and don’t slam doors. Generally, you do not want to set yourself up to be a target by being overly noisy and announcing your presence. If you see anything suspicious happening, you can stay out of sight, make your observations, and report the activity.