In its fourth scheduled test of 2020, the US Air Force launched an unarmed LGM-30 Minuteman III intercontinental ballistic missile (ICBM) early Thursday morning to verify the half-century-old rocket’s instruments still work. The Pentagon recently signed a deal for Northrop Grumman to build the Minuteman III’s replacement. As is typical of Minuteman III tests the solid-fueled three-stage rocket was launched from Vandenberg Air Force Base… Sputnik