USAF breaks ground on Sentinel prototype silo as warhead count and IOC timing remain unclear
The U.S. Air Force broke ground Feb. 13 on a prototype silo for Northrop Grumman’s LGM-35A Sentinel, even as key design and force‑sizing details — notably warhead count — remain unresolved. Sentinel’s initial operational capability has been pushed into the early 2030s amid a growing Chinese nuclear force.