👉 Boulder missiles are a family of intercontinental ballistic missiles (ICBMs) developed by the United States, primarily during the Cold War era. These missiles are characterized by their use of solid-fuel rocket boosters and a two-stage design, with the first stage providing initial propulsion and the second stage delivering the payload to its target. The term "Boulder" refers to the missile's original designation as part of the Minuteman III system, named after the U.S. state of Arkansas, though it was not initially intended for Arkansas. These missiles were notable for their reliability and range, capable of reaching targets across North America and even parts of Europe and Asia. The Boulder missile system played a crucial role in the U.S. nuclear deterrent strategy, ensuring a second-strike capability that was vital to maintaining strategic stability during the nuclear arms race.