The US Navy is developing directed energy systems as a potential defense against hypersonic missiles, the Navy's top admiral said, calling advances Russia and China have made in hypersonic weapon technology "a significant concern."
원문출처 : https://www.cnn.com/2022/08/26/politics/us-navy-hypersonic/index.html
원문출처 : https://www.cnn.com/2022/08/26/politics/us-navy-hypersonic/index.html