400 LGM-35A Sentinel missile deployment faces $130B cost overrun and potential 2-year delay.

The US plan to deploy 400 new LGM-35A Sentinel nuclear-tipped missiles, initially set to replace outdated Minuteman III ICBMs, faces challenges due to 37% cost overruns and potential delays. The estimated cost has increased to $130B from $95.8B in 2020, and deployment could be delayed by two years. Infrastructure construction, supply chain disruptions, and staffing shortages are contributing factors.