Northrop Grumman is aggressively expanding production capacity for the B-21 Raider, the world’s first sixth-generation stealth bomber, and the company’s chief executive says the accelerated tempo could persuade the U.S. Air Force to commit to a substantially larger fleet than its current minimum of 100 aircraft. CEO Kathy Warden made the remarks at the Bernstein Strategic Decisions Conference on May 28, 2026, asserting that Northrop is taking steps — including self-funded investments — to prove that it can absorb a higher order volume without straining its industrial base, Air and Space Forces reported.
The Air Force is currently flight-testing two B-21s at Edwards Air Force Base (EDW), California, and the first operational Raider remains on schedule for delivery to Ellsworth Air Force Base (ELL) in South Dakota in 2027. This disclosure comes against a backdrop of growing political and military pressure to expand the Raider fleet beyond its current program of record.
Defense Secretary Pete Hegseth told lawmakers on April 30 that the U.S. will need “a lot more” than 100 B-21s — the most unambiguous signal yet that Pentagon leadership intends to push procurement upward. In parallel, the last two commanders of U.S. Strategic Command have publicly endorsed a fleet of 145 Raiders, while the head of U.S. Indo-Pacific Command, Admiral Samuel Paparo, has gone further, expressing support for an acquisition of as many as 200 aircraft.
Warden’s Conference Remarks and What They Signal for Procurement
Speaking at the Bernstein conference, Northrop Grumman CEO Kathy Warden linked the company’s plans to accelerate B-21 Raider production with the possibility of a larger U.S. Air Force fleet. She said the agreement to increase production capacity would give the service greater flexibility in determining how many aircraft it ultimately needs.
Warden explained that the faster production rate is now being factored into the Air Force’s assessment of future mission requirements and fleet size. The service is conducting that analysis, with Northrop’s ability to deliver aircraft at a higher rate viewed as a positive factor in determining whether procurement should expand beyond current plans.
The Air Force’s top planner, Lieutenant General David H. Tabor, told lawmakers on May 13 that revised B-21 fleet numbers are likely to be published in spring 2027 as part of the fiscal year 2028 budget proposal. Congress, however, has indicated it may demand an answer sooner: a draft of the National Defense Authorization Act for fiscal 2027, released by the House Armed Services Committee on May 26, would require the Pentagon to submit a report by December 2026 detailing how many B-21s are needed to execute both nuclear and conventional missions.
The $7 Billion Investment Driving Faster Output
The industrial acceleration rests on a two-track funding structure that combines government appropriations with significant private capital. In February 2026, the Air Force and Northrop formalized a $4.5 billion agreement to increase annual B-21 production capacity by 25 percent, using money appropriated under the fiscal year 2025 reconciliation legislation colloquially known as the “One Big Beautiful Bill.” The deal was announced at the Air & Space Forces Association Warfare Symposium on February 23, 2026, and officials stated it would compress delivery timelines without altering approved budgets or performance requirements.
On top of that government funding, Northrop itself is committing $2.5 billion of its own capital to the effort, with $200 million allocated specifically for execution in 2026. Warden disclosed the figure during the company’s April earnings call, noting that the bulk of the spending targets new facilities and will be phased in over the 2027–2029 timeframe. The program already accounts for close to 10 percent of Northrop Grumman’s total company revenue, a share that is expected to rise as output accelerates.
In 2025, Northrop also executed a $477 million production adjustment to optimize workflow and cover material costs, a charge that depressed first-quarter 2025 earnings but which management characterized as a deliberate investment in manufacturing scalability. Warden acknowledged the stumble candidly: “No program is going to be perfect, and so we had that ‘learning,'” she said.
Test Program Progress and the Road to Ellsworth
The flight test campaign has proceeded ahead of its originally projected schedule. A second test aircraft joined evaluation at Edwards AFB on September 11, 2025, providing maintainers with hands-on experience with tools, data, and processes that will support operational squadrons.
In an indicative measure of the program’s maturity, a critical phase of the flight test campaign was compressed from a planned 180-day window to just 73 days, primarily reflecting fewer software rewrites, lower regression-testing requirements, and stable telemetry collection.
On March 10, 2026, a B-21 Raider was photographed conducting its first aerial refueling from a KC-135 Stratotanker over eastern California, a session lasting 5 hours and 33 minutes — evidence that the program had progressed well beyond basic airworthiness evaluation into long-range mission validation. Tom Jones, corporate vice president and president of Northrop Grumman Aeronautics Systems, stated in an official press release:
“Getting the B-21 Raider into the hands of our Air Force operators and maintainers is the mission of thousands of dedicated Northrop Grumman team members. The aircraft continue to outperform digital model expectations, reaffirming confidence in our design and production quality.”
Production lots are advancing in parallel with the flight test regime. With LRIP Lot 3 awarded in the fourth quarter of 2025 and Lot 4 secured in the first quarter of 2026, five lots collectively encompassing at least 21 aircraft are now under contract. Comments from President Donald Trump have suggested at least 28 aircraft have already been ordered. All assembly takes place at Air Force Plant 42 in Palmdale, California, the same facility where the B-2 Spirit was built.
Budget Timelines and Congressional Oversight for the B-21 Program
The formal revision of the B-21 program of record will not happen immediately. Lieutenant General Tabor indicated the Air Force intends to publish a revised fleet objective in spring 2027 as part of the FY2028 budget submission — a timeline that Congress appears unwilling to accept passively.
The draft FY2027 National Defense Authorization Act would compel the Pentagon to report by December 2026 on the total B-21 quantity required for both nuclear and conventional mission sets, and — if that number exceeds 100 — how quickly those additional aircraft could be procured.
Chairman of the Joint Chiefs of Staff General Dan Caine has taken a measured posture, stating that any fleet expansion would hinge on a formal review of operational plans and future threat assessments. A think tank report published in early 2026 called for as many as 200 B-21 Raiders, arguing that only a substantially enlarged bomber and fighter force can deter or prevail in a high-end conflict with near-peer adversaries.
