Northrop Grumman Modernizes US Nuclear Triad with LGM-35A Sentinel Missile System

By Kaif Shaikh · Interesting Engineering · 2026-09-20

Interesting Engineering reports that the U.S. Air Force is moving forward with the LGM-35A Sentinel, a massive overhaul of land-based nuclear deterrents. Replacing the 50-year-old Minuteman III, this three-stage solid-fuel missile involves a vast network of 450 new silos and mode

Interesting Engineering reports that the U.S. Air Force is moving forward with the LGM-35A Sentinel, a massive overhaul of land-based nuclear deterrents. Replacing the 50-year-old Minuteman III, this three-stage solid-fuel missile involves a vast network of 450 new silos and mode