Air Force takes first Minuteman III silo offline, in milestone towards Sentinel   - Breaking Defense

First F.E. Warren Minutemen III Silo Decommissioned For New Sentinel Missiles

The Air Force has confirmed decommissioning of the first F.E. Warren Air Force Base Minutemen III silo to make way for new Sentinel missiles. It’s a huge milestone for the $141 billion nuclear modernization project, which begins in Wyoming.

Air Force takes first Minuteman III silo offline, in milestone towards Sentinel   - Breaking Defense

The service said that requirements to keep 400 nuclear missiles on alert will not be impacted by the shuttering of a silo located at F.E. Warren Air Force Base in Wyoming.