The astonishing clip was reportedly filmed by U.S. troops fighting in Afghanistan in March.
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The footage, shot by a soldier, shows a bizarre silent, triangular object hanging in the sky not far ahead.
As soldiers look on, the craft slowly moves into position, before what appear to be laser flashes soundlessly emanate from its underside.
https://www.youtube.com/watch?v=YQWqiI0jlQc