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U.S. Air Force Begins Transition from Minuteman III to Sentinel Nuclear Missiles
The U.S. Air Force is replacing its Minuteman III intercontinental ballistic missiles with the new Sentinel system. The transition involves decommissioning existing silos and constructing new facilities. Commanders state the upgrade will enhance capabilities while maintaining nuclear deterrence.
May 4, 7:05 PM·1m read1 source
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III nuclear missile silos are located across areas from Colorado to the Canadian border, with a major transition to the Sentinel system now in progress. Air Force commanders are inspecting progress at F.E. Warren Air Force Base in Cheyenne, Wyoming, where the first silo, Echo 10 near the Colorado border, has gone offline for the shift to Sentinel.
Security remains strict at the decommissioned site, with a rapid response team on the ground trained to handle potential threats to nuclear facilities.
The Minuteman III system, operational since 1961 and originally designed for a decade of use, supports approximately 400 ICBMs ready for launch at any time. Commanders emphasize that nuclear deterrence will continue uninterrupted during the transition, with forces prepared to respond if needed.
The Sentinel missile is described as larger, faster, with longer range and greater payload capacity compared to the Minuteman III.
The Sentinel program is currently 80% over budget, with total costs estimated at $141 billion for U.S. taxpayers. The Air Force is building over 450 new launch silos and 50 to 75 launch centers and other supporting facilities. Officials state that once operational, the Sentinel will require less maintenance and be cheaper to operate than the current system.
The new Grey Wolf helicopter will improve security, reach, and response times for silo protection. Adversaries including China, Russia, and North Korea are also upgrading their nuclear programs. The Pentagon is modernizing other elements of the nuclear triad, replacing the B-2 Stealth bomber with the B-21 and Ohio Class submarines with the Columbia Class.
