US reports China has performed several dozen successful hypersonic tests

US Missile Defense Agency commander Lieutenant General Samuel Greaves reports China has performed several dozen hypersonic tests.

In August, 2018, China successfully tested its first waverider boost and glide hypersonic vehicle.US will speed up hypersonic tests and will deploy space based defenses

Michael Griffin, the undersecretary of defense said a rough estimate for deploying space-based interceptors can be calculated on the $20,000 per kilogram is costs to send material into low earth orbit. Griffin talked about a force of 1,000 space-based interceptors each weighing 1,000 kilograms would cost $20 billion.

In 2017, the congressional defense authorization bill directed the Pentagon to draw up proposals for space-based missile defenses.

John Rood, undersecretary of defense for policy, said his office is working on plans for missile defences in space, including both sensors and interceptors. Space-based defenses also will permit so-called “boost-phase” defense—attacking missiles before they are launched, or shortly after launch in the boost phase of flight.

There will be an aggressive new Air Force hypersonic weapons prototyping and demonstration program so that hypersonic missiles, drones and planes can be developed in years instead of decades.

Part of the acceleration is to not wait for “100-percent” solutions but proceed with highly impactful “90-percent” solution. They will have fast-tracked procurement efforts of faster software enhancements, innovations and promising combat technologies likely to have a substantial near-term impact.