The Army is quietly playing a crucial role in the Pentagon’s quest for hypersonic weapons. The service’s modestly named Alternate Re-Entry System is in fact a maneuverable warhead that could end up on Mach 5-plus missiles fired from Air Force bombers and Navy vessels, as well as Army launchers on land — sort of a new non-nuclear triad. t’s all part of Pentagon R&D chief Mike Griffin‘s all-out push to catch up with Russia and China. Both powers are testing hypersonic weapons that could zip through traditional air and missile defenses. – Breaking Defense