U.S. Air Force Overhauling Major Nuclear Programs

The U.S. Air Force is updating two of its largest nuclear modernization programs: the Northrop Grumman B-21 Raider bomber and the LGM-35A Sentinel, both developed by Northrop Grumman. For the B-21 program, the Air Force plans to increase production capacity by 25%, supported by $4.5 billion in funding. The investment will improve manufacturing facilities, parts supply, and workforce hiring so the company can produce bombers faster if needed. The Air Force currently plans to buy at least 100 B-21 aircraft, with 21 already ordered in early production lots. Although early production has faced some cost overruns, officials say the program is still below the government’s original cost estimate, which targets about $692 million per aircraft (in 2022 dollars). Analysts estimate production could increase from around 8 bombers per year to about 10, and the first operational B-21 is expected to enter service in 2027. At the same time, the Air Force is restructuring the Sentinel ICBM program, which will replace the aging LGM-30 Minuteman III missiles. The program was paused after costs rose sharply—about 81% higher than originally expected—triggering a Nunn–McCurdy Amendment breach that requires a major review of the program. One of the biggest issues is the missile silos. The Air Force originally planned to reuse existing Minuteman silos, but many are too deteriorated, so it may need to build around 450 new silos along with command centers and thousands of miles of fiber-optic communications infrastructure. The Sentinel missile is expected to begin deployment in the early 2030s, starting at Francis E. Warren Air Force Base, while the Minuteman III missiles will likely remain in service into the 2050s during the transition. These modernization efforts aim to strengthen the U.S. nuclear deterrent in response to changing global security conditions.