“Sentinel is going to be highly resilient and flexible.”
Sentinel – The Ground Based Strategic Deterrent
Providing a system that is capable, safe, secure and reliable – and ready at a moment’s notice.
Sentinel (GBSD) and Northrop Grumman's Leadership
Through our trusted partnership with the U.S. Air Force, Northrop Grumman’s LGM-35A Sentinel (GBSD) nationwide team is committed to providing a system that is capable, safe, secure and reliable – and ready at a moment’s notice. The company is creating cutting-edge innovations in digital engineering to design and produce this modern strategic deterrent capability for the U.S. Air Force. Together, we are defining what’s possible for providing an enduring weapon system that is relevant for decades to come.
21st Century Deterrence
The U.S. Air Force LGM-35A Sentinel weapon system, formerly known as the Ground Based Strategic Deterrent (GBSD), is a critical modernization of the ground-based leg of the strategic nuclear triad, the bedrock of U.S. national security. The Sentinel (GBSD) system replaces the aging Minuteman III intercontinental ballistic missile (ICBM) system, which has been in service for over 50 years.
The Sentinel (GBSD) system is a complete recapitalization of the current capability. Its modular open-system design reduces operational and sustainment costs and offers enormous system flexibility to keep relevant as the threat landscape continues to evolve.
Read all Supporting Voices here >>
Maj. Gen. Jason Armagost, director, Strategic Plans, Programs and Requirements, AFGSC
Admiral Charles Richard, Commander, USSTRATCOM
"Sentinel is proceeding quite nicely, although I could use that weapons system yesterday."
Admiral Charles Richard, Commander USSTRATCOM
“Even our operational deterrence expertise is just not what it was at the end of the Cold War. So we have to reinvigorate this intellectual effort."
Sentinel (GBSD) in the News
Northrop Grumman Validates Sentinel Missile Design through Rigorous Wind Tunnel Testing Campaign
NATO Is Watching: America Must Have A Modernized Nuclear Weapons Arsenal
By John Tanner and Baron Hill (U.S. Air Force photo by Staff Sgt. Trevor T. McBride)
Sentinel (GBSD) Nationwide Team
The Northrop Grumman nationwide team is developing innovative concepts, technologies, and solutions necessary to meet the Air Force schedule, while delivering a safe, secure, reliable, and effective Sentinel (GBSD) system. Our team has invested significantly in the people, facilities and tools needed to be ready, and is committed to deliver a 21st century Sentinel solution that meets the nation’s needs.
The Sentinel (GBSD) nationwide team includes Aerojet Rocketdyne, Bechtel, CAE, Clark Construction, Collins Aerospace, General Dynamics, HDT, Honeywell, Kratos, Lockheed Martin, and Textron Systems along with hundreds of other small, medium and large businesses across the United States with extensive ICBM missile systems expertise.
Studies and Reports
The U.S. Air Force's Sentinel (GBSD) program will modernize the ground-based leg of the nuclear triad. Read all key studies and reports about this critical weapon system here >>
2022 National Defense Strategy, Nuclear Posture Review, and Missile Defense Review
October 27, 2022 - documentcloud.org
Long Shadows: Deterrence in a Multipolar Nuclear Age
May 2022 – Center for a New American Security
The Nuclear Posture Review Must Account for a Growing Chinese Nuclear Threat
January 2022 – The Heritage Foundation
Sentinel (GBSD) Careers
Our Sentinel (GBSD) program is hiring cleared professionals to join our highly skilled team working to mature designs for Sentinel (GBSD), the nation's next Intercontinental Ballistic Missile (ICBM) system. As part of the Northrop Grumman Sentinel (GBSD) team, your specialized skills will allow us to deliver on a national security priority to develop a modernized ICBM for the U.S. Air Force.
Northrop Grumman has secure Sentinel (GBSD) career opportunities across the nation that can define your career with one of the biggest projects ever. Explore career opportunities at Northrop Grumman where you will push the boundaries of possible and fundamentally transform how we defend our nation.