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Thursday / July 7.
HomeTwitterThe U.S. was once a leader in developing supersonic and hypersonic technology, but we’ve now fallen behind Russia, China and possibly North Korea. Here’s how we’re spending billions to catch up. Full video:

The U.S. was once a leader in developing supersonic and hypersonic technology, but we’ve now fallen behind Russia, China and possibly North Korea. Here’s how we’re spending billions to catch up. Full video: