Ground Subsystems Support Contract

Ground Subsystems Support Contract (GSSC)

Ensuring the land-based leg of the U.S. strategic triad is safe, secure and reliable

U.S. Air Force Awards Northrop Grumman Ground Subsystems Support Contract (GSSC)

“Northrop Grumman brings proven performance, a highly skilled team of experts, and a continued commitment to ensuring Minuteman III weapon system operational readiness for the U.S. Air Force,” said Greg Manuel, sector vice president and general manager, strategic deterrent systems division, Northrop Grumman. “Our team is using the latest in digital engineering and innovation to keep today’s system reliable, safe and secure while positioning the Air Force for a smooth transition to the (Sentinel) Ground Based Strategic Deterrent (GBSD) system over the next couple decades.”

Northrop Grumman News Release
A rendering of missile interceptor and a testing site

Northrop Grumman’s Leadership in ICBM Sustainment

As prime contractor for Ground Subsystems Support since 2015, Northrop Grumman is providing engineering and field services to sustain the ground subsystems on the U.S Air Force Minuteman III, first deployed in the early 1970s, through the end of its service life later in the next decade. 

Northrop Grumman is also serving as prime contractor for sustaining Minuteman III propulsion under the Propulsion Subsystem Support Contract (PSSC).

Leveraging 65 years of proven performance and expertise from across legacy Northrop Grumman companies to ensure today’s Minuteman III system is safe, secure and reliable while positioning the Air Force for a smooth transition to the modernized replacement system, Ground Based Strategic Deterrent, over the next couple of decades.

woman and man operating computers in a dark-lit control room

Innovating for a 21st Century Threat

Northrop Grumman has partnered with the U.S. Air Force since 1954 to support every ICBM weapon system from initial capability development through system sustainment and modernization. 

Today, we are applying innovative techniques to sustain our current capability while leveraging the latest in digital engineering to a future replacement capability, the Sentinel (GBSD), to assure our allies and keep our nation safe for decades to come.


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A Legacy of ICBM Expertise for 21st Century Deterrence

Missile launching

Ground Based Strategic Deterrent (GBSD)

Propulsion Systems

Missile shooting into the blue sky

Northrop Grumman’s History with the ICBM System

woman and man operating computers in a dark-lit control room

ICBM: Over 65 years of technical leadership