The United States just launched a nuclear missile, but it was unarmed and it was a test flight. Dubbed Glory Trip 254, the test flight commenced with the launch of an unarmed Minuteman III intercontinental ballistic missile or ICBM from California's Vandenberg Space Force. The missile traveled about 4,200 miles west and impacted within a designated missile testing range, the U.S. Army's Ronald Reagan Ballistic Missile Defense Test Site in the Marshall Islands. What's interesting is that the U.S. military has plans to phase out this particular missile format, the Minuteman III ICBM, by 2030. The Sentinel weapon system he's referring to is the new LGM-35 Sentinel, currently in development by Northrop Grumman.