2月9日，警用直升机在北京上空巡逻。当日，北京警方出动5架次直升机服务春节安保工作，分为下午、傍晚、夜间三个批次，飞行十余小时，与地面警力形成立体化防控体系，为首都市民欢度新春佳节保驾护航。这是北京警方连续第四年将警用直升机投入到除夕安保工作中。新华社发（张岩 摄）      On February 9,,Helicopters over in Beijing patrol.the,Beijing police helicopter out 5 vehicles service security during the Spring Festival,Divided into afternoon/In the evening/Night three batches,More than ten hours flight,With ground forces form three-dimensional prevention and control system,Is the capital of the Spring Festival to celebrate the citizens to escort.This is the Beijing police will helicopters for the fourth consecutive year in the New Year's eve security work.The xinhua news agency hair(Metcalf jv perturbation) 

    2月9日，警用直升机在北京上空巡逻。新华社发（张岩 摄）     On February 9,,Helicopters over in Beijing patrol.The xinhua news agency hair(Metcalf jv perturbation)