Private security companies in the United States, mainly to provide close protection, explosive detection and protection, investigation, armed escort, armed patrols, armed escort, money or valuables monitoring, global vehicle tracking service.

美国私人安全公司，主要提供近身保护、爆炸物探测与保护、调查、武装护送、武装巡逻、货币或贵重物品武装押运、监视、全球车辆追踪等服务。

Private security companies in the United States, mainly to provide close protection, explosive detection and protection, investigation, armed escort, armed patrols, armed escort, money or valuables monitoring, global vehicle tracking service.

美国私人安全公司，主要提供近身保护、爆炸物探测与保护、调查、武装护送、武装巡逻、货币或贵重物品武装押运、监视、全球车辆追踪等服务。