Both nations have intercontinental ballistic missiles (ICBMs) buried inside fortified underground missile silos. China's workhorse ICBM is the massive, 183-ton DF-5, which has a range of over 7,450 miles and the capacity to carry 3.2 tons—as either be a 5 megaton "city buster" hydrogen bomb, or, more recently, 3 to 8 multiple independently targetable reentry vehicle (MIRV) nuclear warheads, that can each individually strike a different target. While powerful, the DF-5 uses liquid fueled engines, requiring a lengthy fueling process before launch, making it vulnerable to a first-strike attack. The US's LGM-30G Minuteman III ICBM, of which 440 are based in Midwestern silos, is much smaller and carries only three nuclear warheads. However, its solid-fueled engines make it far more survivable, since it can be launched in mere minutes.