The Land Leg of America's Strategic Nuclear Deterrent

Rendering of Sentinel at Twilight
rocket launching from earth

Northrop Grumman Advances Sentinel Design Phase With Key Tests

Read the Full Northrop Grumman News Release Here

Sentinel 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.

Sentinel (GBSD) Career Opportunities Digital Transformation
rendering of missle facilities

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 system replaces the aging Minuteman III intercontinental ballistic missile (ICBM) system, which has been in service for over 50 years.

The Sentinel 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.

Supporting Voices

Read all Supporting Voices here >>

Maj. Gen. Jason Armagost, director, Strategic Plans, Programs and Requirements, AFGSC

“Sentinel is going to be highly resilient and flexible.”

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."

rocket being tested inflight

Northrop Grumman Advances Sentinel Design Phase With Key Tests

Northrop Grumman Validates Sentinel Missile Design through Rigorous Wind Tunnel Testing Campaign

rendering of rocket launch

Northrop Grumman Test Fires Full-Scale Sentinel Stage-Two Solid Rocket Motor

Infographic map of the United States showing locations of team members working on the GBSD contract 2

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.

Northrop Grumman Sentinel (GBSD) Nationwide Team Sentinel (GBSD) Teammate Roles and Responsibilities

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 >>

National Defense Strategy logo

2022 National Defense Strategy, Nuclear Posture Review, and Missile Defense Review

October 27, 2022 -

missile with flags as shadows

Long Shadows: Deterrence in a Multipolar Nuclear Age

May 2022 – Center for a New American Security

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The Nuclear Posture Review Must Account for a Growing Chinese Nuclear Threat

January 2022 – The Heritage Foundation

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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.

Sentinel (GBSD) Careers Rising to the Occasion It's More Than an Internship

Deterrence News

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