The Air Force already flies its unmanned aerial vehicles remotely, with operators located in the United States controlling unmanned systems flying in Iraq and Afghanistan.
空军已经远程控制无人机，和位于美国的控制伊拉克和阿富汗的无人驾驶飞行系统的操作员一起。
2
A big shift in passenger Numbers would be more likely if airlines had to pay the same taxes that train operators do, namely value-added tax and a tax on fuel, both of which would push up air fares.