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:

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: https://t.co/aMrhpoXpvn pic.twitter.com/E65iWlDPqo

— CNBC (@CNBC) April 23, 2022