许多人认为，空中交通管制系统是由一排坐在美国机场雷达屏幕前的管制员组成的，他们告诉到达和离开的航班该做什么。

Many people think that ATC consists of a row of controllers sitting in front of their radar screens at the nation's airports, telling arriving and departing traffic what to do.

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在20世纪40年代，空中交通管制中心能够而且确实利用了第二次世界大战中新研制的雷达和改进的无线电通讯，但是这个系统还处于初级阶段。

In the 1940s, ATC centres could and did take advantage of the newly developed radar and improved radio communication brought about by the Second World War, but the system remained rudimentary.

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在这起ufo事件发生的数小时前，俄罗斯雅库茨克、西伯利亚地区的空中交通管制员，声称用雷达检测到一架时速6000英里的速度飞行在65000英尺的高度。

Only hours prior to the March 1 event, air-traffic controllers in Yakutks, Siberia, claim to have picked up a UFO on radar traveling at 6000 MPH at a height of 65, 000ft.

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