C Hypersonic News Today

Ust, c hypersonic test that the chairman of the joint chiefs compared to the russians beating the u.s. into space. >> what we saw was a very significant event of a test of a hypersonic weapon system, and it is very encourage. >> reporter: the chinese buildup is dramatic, but they are not about to surpass the u.s. as a nuclear power. the u.s. has 3,750 nuclear warheads, nearly four times as many as china might have by 2030. norah. >> odonnell: david martin at the pentagon. thank you. well, there ...