Things went horribly wrong for test pilot Ken Collins (flying under his Area 51 code name Ken Colmar) when testing the plane's subsonic engines at low altitude.

试飞员肯·柯林斯(他在51区的飞行代号为肯·科尔马)在低空测试飞机的亚音速发动机时遭遇了可怕的事故。

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That low-flying helicopter crisscrossing the skies over the San Francisco Bay Area for the next three days is gathering data on background radiation levels, according to the National Nuclear Security Administration.

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