( Editor’s note: This story was updated on Oct. 13 to clarify the Defense Department scored the October 2021 hypersonic weapon launch a “no test” -- not a “failure.” ) The Pentagon has delayed a high-stakes flight test of a long-range hypersonic weapon that was originally to be executed no later than last month, a change of plans that eats away at the timetable of a project with little schedule margin in the U.S. military's effort...