The Pentagon is set to brief the Senate Armed Services Committee regarding the strategy for maintaining the aging Minuteman III nuclear missiles. This briefing is prompted by concerns about the readiness of the Air Force to keep these missiles operational until the new Sentinel intercontinental ballistic missile program is fully deployed.
A provision within the Senate’s fiscal 2026 defense authorization bill highlights these concerns. Lawmakers are seeking assurances that the existing Minuteman III missiles will remain viable until their replacement, the Sentinel, is ready.
The recently passed legislation mandates that the commander of the Global Strike Command provide a briefing to the committee by December 31st. This briefing will detail the plans for sustaining the Minuteman III missiles until the Sentinel system is operational.
Financial support for the Sentinel program is evident in both the House and Senate versions of the bill, with the House allocating $3 billion and the Senate proposing $4.6 billion for the fiscal year starting October 1.
Further emphasizing the commitment to the Sentinel program, the Senate bill includes a provision directing the Air Force to establish a target date for the initial deployment of the Sentinel missiles. The bill also prohibits reducing the number of new ICBMs below 400.
The required briefing on the Sentinel program must cover critical aspects of lifecycle sustainment activities, encompassing missile support equipment, ground infrastructure, command and control systems, and flight systems. This comprehensive approach aims to ensure the long-term viability of the new ICBM system.
Another key aspect of the briefing involves assessing Global Strike Command’s capacity to rapidly add additional warheads to the current single-warhead Minuteman III missiles, if directed by the U.S. Strategic Command. This capability is considered crucial in the face of evolving global threats.
The potential for adding multiple warheads to the Minuteman III reflects growing concerns about strategic deterrence being challenged by the expanding nuclear capabilities of nations like China.
Senators are also interested in understanding the Air Force’s strategies for allocating resources to address any potential shortfalls in nuclear missile capabilities. They are also exploring the need for legislation to streamline processes related to Minuteman III sustainment and warhead upload plans.
The Air Force previously informed Congress in 2021 that all 400 Minuteman III missiles would be retired upon the full operational deployment of the Sentinel program, projected for 2036.
However, the Sentinel program experienced a significant cost overrun in the past year, triggering a Nunn-McCurdy breach, a mechanism designed to prevent excessive defense spending. The estimated cost for the new Sentinel missiles throughout their deployment ranges from $125 billion to $141 billion.
The ICBM program is also facing considerable delays, potentially requiring the Air Force to maintain the Minuteman III missiles, the land-based component of the nuclear deterrent, for an extended period.
Consequently, the committee has expressed concerns about the Air Force’s ability to effectively sustain the aging Minuteman III system during the transition to the Sentinel program.
The Senate bill also proposes regular reviews by the U.S. comptroller general to Congress on the operation and sustainment of the Minuteman III arsenal, providing ongoing oversight of the program.
