https://www.defensenews.com/land/2020/02/05/mda-taps-industry-to-build-interceptor-to-defend-against-hypersonic-threats/
https://www.businessinsider.com/hypersonic-weapons-could-nullify-missile-defenses-2018-2
https://www.engadget.com/2019-12-28-russia-avengard-hypersonic-missile-in-service.html
https://www.nationaldefensemagazine.org/articles/2019/3/22/incoming-can-aircraft-carriers-survive-hypersonic-weapons
https://www.nationaldefensemagazine.org/articles/2019/2/1/pentagon-looking-at-new-interceptor-to-defeat-hypersonic-missiles