nuclear-news

Pentagon keeps commitment to Sentinel nuclear missile as costs balloon

Defense news, By Stephen Losey 8 July 24

The military will continue developing its new LGM-35A Sentinel intercontinental ballistic missile but has told the U.S. Air Force to restructure the program to get its ballooning costs under control.

Even a “reasonably modified” version of the Northrop Grumman-made Sentinel will likely cost $140.9 billion, 81% more than the program’s original cost estimate of $77.7 billion, the Pentagon said in a statement. If Sentinel continues on its current path without being modified, the likely cost will be about $160 billion, it said.

And the military expects restructuring the program will delay it by several years.

“There are reasons for this cost growth, but there are also no excuses,” William LaPlante, undersecretary of defense for acquisition and sustainment, said in a conference call with reporters on Monday. “We fully appreciate the magnitude of the costs, but we also understand the risks of not modernizing our nuclear forces and not addressing the very real threats we confront.”

The Sentinel is intended to replace the Air Force’s half-decade old Minuteman III nuclear missile, which is nearing the end of its life. In January, the Air Force announced Sentinel’s future costs were projected to run over budget severely enough to trigger a review process known as a critical Nunn-McCurdy breach.

Such a review can sometimes lead to a program being canceled. LaPlante said Monday he decided to proceed with Sentinel after concluding it met several criteria, including that it is essential to national security and there were no cheaper alternatives that would meet the military’s operational requirements.

Big changes are coming for Sentinel, however. LaPlante rescinded the program’s Milestone B approval, which in September 2020 authorized the program to move into its engineering and manufacturing development phase. He also ordered the Air Force to restructure the program to address the root causes of the cost overruns and make sure it has the right management structure to keep its future price down.

The per-unit total cost for Sentinel was originally $118 million in 2020, when its cost, schedule and performance goals were set. When the Nunn-McCurdy breach was announced in January, those per-unit costs had grown at least 37% to about $162 million.

Hunter said the per-unit cost for the revised Sentinel program — which include components in addition to its missiles — is estimated to be about $214 million……………………………. more https://www.defensenews.com/air/2024/07/08/pentagon-keeps-commitment-to-sentinel-nuclear-missile-as-costs-balloon/—

July 10, 2024 - Posted by Christina Macpherson | USA, weapons and war