Air Force aims for a program overhaul and operational readiness before Minuteman III extension.
The Sentinel Intercontinental Ballistic Missile (ICBM) program, designed to replace the aging Minuteman III missiles, is undergoing a significant restructuring. Brig. Gen. William Rogers expressed confidence today that the program would be fully operational before any potential service life extension for the existing Minuteman III missiles. A critical Milestone B decision is expected by mid-2027, marking a key step forward for the program.
„We’ll Get Sentinel Done”
Rogers, speaking at the Air and Space Forces Association conference, stated, „We’ll get Sentinel done, I am confident, before we would be ready to start fielding” a service life extension for the Minuteman III missiles. This commitment comes amidst concerns about the program’s rising costs and schedule delays.
Extending Minuteman III’s Lifespan: A Buffer Strategy
While the Government Accountability Office (GAO) suggested the MMIII fleet could operate until 2050, Rogers clarified that the Air Force is primarily focused on determining the precise lifespan of the legacy missiles. Planning to 2050 serves as a „buffer” to ensure the reliability of the land-based leg of the nuclear triad.
Resetting the Clock: The 2027 Milestone B Decision
The Sentinel program faced a setback in July 2024 when the Pentagon announced a projected cost breach of approximately 81 percent, setting the new price tag at $141 billion. This led to the rescinding of the program’s Milestone B decision, which needs to be reapproved by the Office of the Secretary of Defense in 2027. Despite this, work on the program continues.
Industry Perspective: Northrop Grumman’s Progress
Northrop Grumman, the prime contractor for Sentinel, emphasized the progress made under the EMD contract. A spokesperson stated, „Our nationwide industry team has made substantial progress under the EMD contract, maturing Sentinel’s design and reducing risk as we prepare for production and deployment of this essential, national security capability.”
Silo Redesign: A Cost-Effective Approach
A significant change in the program involves the decision to construct new silos instead of reusing existing Minuteman III silos. This shift was driven by factors such as the presence of asbestos and lead paint in the old silos, as well as unexpected variations in their concrete. Market research indicated that rebuilding new silos on the same sites would be more cost-effective and faster. The new silo design will employ simpler modules that can be built offsite and easily assembled, streamlining construction.
Streamlining Infrastructure: Army Corps of Engineers Involvement
The Air Force is also reevaluating the division of labor for infrastructure work. Cabling work, initially assigned to Northrop Grumman, will now be handled by the Army Corps of Engineers, which is better equipped to task telecommunications companies for this specialized task.
Considering MIRVs: A Potential Mitigation Strategy
The recent GAO review suggested the possibility of reintroducing multiple independently targetable reentry vehicles (MIRVs) for the MMIII fleet as a contingency plan in case of further delays with Sentinel. While this would require a policy change, Rogers confirmed it is technically feasible.
