Source: United States & Canada – South China Morning PostUS efforts to catch up with China and Russia in developing hypersonic weapons may be set back after Lockheed Martin Corp.’s air-launched missile suffered three consecutive test failures that left it on a tight schedule.That has put in doubt the Pentagon’s goal to declare it America’s first combat-ready hypersonic weapon and approve initial production by September 30.China and Russia have conducted test launches and fielded their versions of the new weapons, which can travel five times the speed…Read More