U.S. to Launch LGM-30G Minuteman III Ballistic Missile in Scheduled Strategic Readiness Test

The LGM‑30G Minuteman III intercontinental ballistic missile (ICBM) will be launched in an operational test by the U.S. military from Vandenberg Space Force Base in California during a scheduled window beginning 11:01 p.m. Pacific Time on 4 November 2025. According to public notification, the unarmed test is part of a long-planned readiness program rather than a reaction to recent events.

Background

The Minuteman III system is the land-based leg of the U.S. nuclear triad, alongside submarine-launched ballistic missiles (SLBMs) and strategic bombers. Designated LGM-30G (where “L” = silo launch, “G” = surface attack, “M” = guided missile) the missile has been in service since the 1970s and has undergone continuous life-extension upgrades. With about 400 missiles deployed across hardened silos, the system remains a pillar of U.S. deterrence.

Routine test launches like this one serve to validate accuracy, reliability, guidance and re-entry performance of the missile and its related systems. According to the announcement, more than 300 similar tests have been conducted over the missile’s life.

Details of the Upcoming Test

The U.S. military’s window for launch runs from 11:01 p.m. to 5:01 a.m. Pacific Time on 4 November 2025, from Vandenberg. The missile will be unarmed and will fly across a designated test corridor—likely from California toward the Pacific test range—though specific impact location has not been publicly detailed. The event follows a directive by Donald Trump to restart aspects of U.S. nuclear testing, though U.S. officials emphasize that no nuclear explosion is planned in connection with this test.

LGM-30G Minuteman III Ballistic Missile – Full Specifications

Officials from the Air Force Global Strike Command (AFGSC) and the test-range authority have stated that the launch is part of standard validation of the ICBM fleet, ensuring the weapon remains safe, secure and credible. For example, a May 2025 launch carried a single Mark-21 high fidelity re-entry vehicle and collected data on performance across the system.

Technology and Capability of the System

The Minuteman III is a three-stage solid-fuel rocket system with a range in excess of 6,000 miles (approximately 10,000+ km). It is silo-based, dispersed across multiple states, and maintained on 24/7 alert by highly trained crews. The system’s guidance integrates inertial navigation with updates in later modifications to achieve high accuracy against hardened targets. While initially capable of carrying multiple independently-targetable re-entry vehicles (MIRVs), current U.S. practice is to field a single warhead configuration to reduce escalation risk and maintain treaty compliance.

Strategic & Geopolitical Context

Although the test is nominally routine, its timing coincides with heightened strategic signalling. The launch comes in the wake of increased tensions in the great-power domain—particularly competition with both Russia and China—and after the directive from President Trump concerning nuclear-test posture. By conducting a public, announced launch of the Minuteman III, the U.S. signals the credibility of the land-based leg of its deterrent without needing a nuclear explosion.

Analysts note that by utilizing a well-established test corridor (California to Pacific), and publicly scheduling the launch, the U.S. demonstrates both transparency and operational readiness—important for allies reassured by U.S. extended deterrence and for adversaries monitoring capability. The test also generates telemetry and performance data that feed modernization decisions, particularly as the U.S. plans to eventually replace the Minuteman with the next-generation LGM‑35A Sentinel system.

Expert / Policy Perspectives

According to Air Force public affairs materials, the data gathered from operational launches enables the Department of Defense and Department of Energy to evaluate performance trends and maintenance needs across the ICBM enterprise. AFGSC commander Gen. Thomas Bussiere has stated that such tests “underscore the strength of the nation’s nuclear deterrent and the readiness of the ICBM leg of the triad.” The public announcement of the launch window is also consistent with prior notice procedures under the Hague Code of Conduct and bilateral notification with Russia.

The modernization challenge remains significant: the Minuteman III fleet has been in service for decades, and its eventual replacement by the Sentinel program is scheduled for the 2030s. Ensuring the legacy missile remains reliable until that transition is a policy and technical imperative.

What’s Next

Following the launch on 4 November, the U.S. Air Force and test-range teams will analyse flight telemetry, re-entry vehicle performance, guidance accuracy and launch-crew control-loop timings. The results will inform maintenance, sustainment and future modernization work. While this test does not mark a change in nuclear policy, it solidifies the fact that the U.S. land-based ICBM force remains active, visible and exercised.

Looking ahead, as the Sentinel replaces Minuteman in the decades to come, further operational tests and modernization steps will shape the next generation of land-based deterrence. In the interim, routine launches like this underscore that the U.S. maintains the technical and operational capability of its silo-launched ICBM force.