The Guardian reports that “a hypersonic weapon being developed by the US military was destroyed four seconds after its launch from a test range in Alaska early on Monday after controllers detected a problem with the aircraft, the Pentagon said.”  

“The craft was destroyed to ensure public safety, and no one was injured in the incident, which occurred shortly after 4am ET (8am GMT) at the Kodiak Launch Complex in Alaska, said Maureen Schumann, a spokeswoman for the US Defense Department.”