Ключевые слова: active duty, city life, city streets, cityscape, crime prevention, crowd control, emergency response, emergency vehicle, flashing lights, law enforcement, law enforcement agency, law enforcement operation, neon lights, night, night patrol, nighttime, patrolling, police car, public safety, public service, response, safety measures, security, siren, siren sound, streetlights, surveillance, traffic, transportation, urban, vehicle lights,