If all goes well, the Pentagon this week will test an unmanned aircraft that, in theory, can travel at speeds upwards of 13,000 miles per hour and send a missile to strike an identified target within ...
It's a bird! It's a plane! No! It's the Defense Advanced Research Project Agency's (DARPA) Mach 20 aircraft, and apparently, that pesky glider is so fast that it's rather difficult to track. DARPA ...
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