![Hypersonic jet made by the United States can fly five times the speed of sound [Images]](https://english.fastnews.lk/wp-content/uploads/2015/07/jett.jpg)
Hypersonic jet made by the United States can fly five times the speed of sound [Images]
Reportedly, the United States military is working in a hypersonic jet, which can fly five times the speed of…
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Reportedly, the United States military is working in a hypersonic jet, which can fly five times the speed of…