When the door is closed, one can hear typical hollow thud of armor. When you drive in the “Tiger”, you do feel that you are inside an armored vehicle.

当门关上的时候，可以听到厚重装甲撞击所发出的典型的砰的声音。的当你在乘坐虎式的时候你能够很明显的感觉到你是在一辆装甲车辆内

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With fleets of armored vehicles, numerous helicopters, sometimes with visible door gunners and at least a thousand security staff, Blackwater is one of the most visible private security companies in Iraq.

NPR: Blackwater's Iraq Security Contract Threatened

With fleets of armored vehicles, numerous helicopters sometimes with visible door gunners and at least 1, 000 security staff, Blackwater is one of the most visible private security companies in Iraq.

NPR: Iraq to Review Contract Security After Shootout