The LGM-30 Minuteman is a US land-based intercontinental ballistic missile (ICBM), in service with the Air Force Global Strike Command. As of 2014, the LGM-30G Minuteman III version[a] is the only land-based ICBM in service in the United States. It is one component of the US nuclear triad—the other two parts of the triad being the Trident submarine-launched ballistic missile (SLBM), and nuclear weapons carried by long-range strategic bombers. Each missile carries up to three nuclear warheads, which have a yield in the range of 300 to 500 kilotons. The Minuteman was the first MIRV-capable missile.