Defense & Military
US Air Force Awards $2 Billion Contract for B-52J Modernization
Boeing receives $2.04 billion contract to upgrade B-52 bombers with new engines and avionics, extending service through 2050s.

This article summarizes reporting by Interesting Engineering.
US Air Force Awards $2 Billion Contract to Launch B-52J Modernization Era
The United States Air Force has officially initiated the physical integration phase of its historic B-52 Stratofortress modernization program. According to reporting by Interesting Engineering and recent Department of Defense announcements, Boeing has been awarded a contract valued at approximately $2.04 billion to begin modifying the legendary bomber fleet. This development marks a critical transition from digital design to physical production, paving the way for the aircraft’s new designation: the B-52J.
The Commercial Engine Replacement Program (CERP) represents the most significant overhaul of the B-52 since its introduction in the 1950s. By replacing aging engines with modern commercial derivatives and upgrading critical avionics, the Air Force intends to keep the Stratofortress operational through the 2050s, potentially allowing the airframe to see a century of continuous service.
Contract Details and Timeline
The newly awarded contract focuses on the “low-rate initial production” phase of the integration. As reported, this funding covers the modification of the first two B-52H aircraft into the new B-52J configuration, which will be used for rigorous flight testing. This step follows the successful completion of the Critical Design Review (CDR) for the new Rolls-Royce F130 engines in December 2024, a milestone that confirmed the design’s maturity for installation.
According to the program schedule outlined in recent reports:
- Early 2025: Altitude testing is slated to begin at the Arnold Engineering Development Complex in Tennessee to verify engine performance under flight conditions.
- 2028: The first modified B-52J test aircraft are expected to be ready for ground and flight testing.
- 2033: The fleet is projected to reach Initial Operational Capability (IOC).
The contract work is expected to conclude by May 2033, aligning with the Air Force’s goal to have the first squadron combat-ready early in the next decade.
Technical Specifications: The B-52J
The transition from the B-52H to the B-52J involves comprehensive upgrades beyond just the engines. The modernization effort aims to improve fuel efficiency, range, and situational awareness.
Rolls-Royce F130 Engines
The centerpiece of the upgrade is the adoption of the Rolls-Royce F130 engine, a military derivative of the BR725 commercial engine used on business jets like the Gulfstream G650. The B-52 will retain its iconic eight-engine configuration, with two engines housed in each of the four pods.
Data cited in reports indicates that these new engines will deliver an approximate 30% improvement in fuel economy compared to the legacy Pratt & Whitney TF33 engines. This efficiency gain significantly extends the bomber’s unrefueled combat range and loiter time. Additionally, the F130 is designed to remain “on-wing” for the remainder of the aircraft’s service life, eliminating the need for the frequent heavy maintenance overhauls required by the previous engines.
Avionics and Radar Overhaul
Alongside the propulsion upgrade, the B-52J will feature a modernized cockpit and sensor suite. A key addition is the AN/APG-79B4 Active Electronically Scanned Array (AESA) radar. Derived from the radar used on the F/A-18 Super Hornet, this system provides fighter-class target detection range and ground mapping capabilities.
The interior will also see changes, including a cleaner cockpit layout with digital displays and updated communication systems. Due to increased automation, the crew size will be reduced from five to four, removing one crew station.
AirPro News Analysis
The decision to invest billions into a 70-year-old airframe highlights a unique strategic reality: the B-52 offers capabilities that newer, stealthier platforms cannot replicate cost-effectively. While the B-21 Raider is designed to penetrate contested airspace, the B-52J serves as a high-capacity “stand-off” platform. Its massive payload allows it to launch long-range hypersonic weapons, such as the future Hypersonic Attack Cruise Missile (HACM), from outside the range of enemy air defenses.
Furthermore, the economics of the upgrade are compelling. The legacy TF33 engines have been out of production since 1985, making parts scarce and maintenance prohibitively expensive. By switching to a commercial-derivative engine with an established global supply chain, the Air Force expects the fuel and maintenance savings to offset the cost of the program over time. This modernization ensures the B-52 remains a credible deterrent well into the mid-21st century.
Frequently Asked Questions
What is the main difference between the B-52H and the B-52J?
The B-52J features new Rolls-Royce F130 engines, a new AESA radar system, updated avionics, and a modified cockpit layout that reduces the crew size from five to four.
When will the B-52J enter service?
Initial Operational Capability (IOC) is projected for 2033, with the first test flights expected around 2028.
Why is the Air Force keeping such an old plane?
The B-52 remains structurally sound and offers unmatched payload capacity for long-range standoff weapons. It complements stealth bombers by acting as a “missile truck” for hypersonic weapons that are too large for internal carriage on smaller aircraft.
Sources
Defense & Military
First Permanently Assigned F-15EX Eagle II Arrives at Kadena Air Base
The first F-15EX permanently assigned to Kadena Air Base, Japan, arrived November 15, 2026, the next phase in replacing its F-15C/D fleet.

The first F-15EX Eagle II permanently assigned to Kadena Air Base, Japan, arrived on November 15, 2026, making Kadena the first overseas U.S. Air Force installation to receive combat-coded F-15EX aircraft. The arrival marks the next phase in replacing the base’s legacy F-15C/D fleet, which a 2024 Department of Defense plan sets at 36 F-15EX aircraft in place of 48 F-15C/Ds.
The 18th Wing announced the arrival in a news release from its public affairs office, calling it a major milestone in the wing’s fighter modernization. Kadena becomes the second Air Force location to field the fighter, after the Oregon Air National Guard’s 142nd Wing at Portland Air National Guard Base.
Brig. Gen. John Gallemore, 18th Wing commander, tied the aircraft to the U.S.-Japan Alliance.
“The arrival of the F-15EX at Kadena marks a significant milestone for American airpower in the Pacific. These aircraft strengthen our ability to deter aggression, respond to emerging threats, and defend Japan alongside our allies and partners.”
Gallemore said in the release that the aircraft’s permanent presence at Kadena reinforces the U.S. commitment to the alliance and brings advanced combat capabilities to one of the most strategically important regions in the world.
Squadrons and maintainers trained away from home
According to the 18th Wing, operators from the 67th Fighter Squadron traveled to Eglin Air Force Base, Florida, and Portland Air National Guard Base, Oregon, to maintain flying proficiency and complete aircraft qualification training before the jet arrived. “Getting the F-15EX to Kadena is just the beginning,” said Lt. Col. Ajay Dua, 67th Fighter Squadron commander. Dua said the squadron’s focus now shifts to integrating the aircraft into its flying operations, building experience and learning how to get the most out of its capabilities.
Maintenance personnel from the 18th Aircraft Maintenance Squadron spent years preparing for the transition, working with Boeing and Air Force teams at Eglin and Portland to build and keep technical proficiency. They also supported F-15E operations at Shaw Air Force Base, South Carolina, during a personnel shortfall. “The arrival of the F-15EX represents years of hard work and dedication from our maintainers,” said Maj. Spencer Sherman, 18th Aircraft Maintenance Squadron commander.
Kadena had also hosted the type on visits before the permanent arrival. On June 29, 2026, an F-15EX returned to Kadena with two F-15E Strike Eagles, all three assigned to the 85th Test and Evaluation Squadron at Eglin, following an earlier inaugural visit. The 18th Wing said at the time that the visit helped validate maintenance procedures, logistics requirements and combat generation capabilities for future F-15EX operations, and it identified the 67th Fighter Squadron as Kadena’s first operational F-15EX unit.
From the 2024 basing plan to a permanent jet
The Department of Defense (DoD) announced the Kadena change on July 3, 2024, working closely with the Government of Japan, as part of a plan to upgrade U.S. tactical aircraft at several installations in Japan. The DoD said the plan reflects more than $10 billion in capability investments. Alongside the Kadena transition, it raises the Air Force presence at Misawa Air Base from 36 F-16s to 48 F-35As. The DoD said the Joint Force would keep a rotational presence of fourth- and fifth-generation tactical aircraft at Kadena throughout the transition.
The 18th Wing said Kadena’s F-15C/D fleet began its phased withdrawal in November 2022 after more than four decades of service. Rotational deployments kept a continuous fighter presence at the base in the meantime, among them an F-35A rotation from Alaska by the 356th Expeditionary Fighter Squadron, deployed from Eielson Air Force Base under the Air Force fighter rotation program.
The first Kadena-bound F-15EX was routed through Oregon. On August 28, 2026, the 18th Wing said the first F-15EX assigned to Kadena had left Boeing’s St. Louis facility for Portland Air National Guard Base, where it would receive more preparation before moving on to Kadena. At that point the wing said F-15EX arrivals at Kadena were scheduled to begin in fiscal year 2027. “This is an important next step toward bringing the F-15EX home to Kadena,” Gallemore said in August.
What the F-15EX adds at Kadena
The 18th Wing said the F-15EX brings advanced avionics, modernized electronic warfare systems and increased weapons-carrying capacity to Kadena’s fighter mission. The wing said the aircraft expands Kadena’s ability to conduct counterair operations while complementing fifth-generation aircraft and supporting bilateral readiness with the Japan Air Self-Defense Force (JASDF) and other regional partners. In August, the wing noted that it regularly trains with JASDF F-15s at Naha Air Base in bilateral exercises.
The arrival follows the latest F-15EX production award. On September 29, 2026, Boeing said the Department of War had awarded it a $2.38 billion contract for 22 more F-15EX aircraft, bringing the total under contract for Lots 1 through 7 to 120, as AirPro News reported in its coverage of the $2.38 billion award for 22 jets. Boeing said it would work with the Air Force and the Department of War to raise F-15EX production to two aircraft per month.
What comes next for the 18th Wing
The 18th Wing’s release does not give a schedule for the rest of the 36 aircraft. Both the 44th and 67th Fighter Squadrons will operate the F-15EX at Kadena, carrying forward the legacy of the two squadrons. The arrival also comes as the wing prepares for its centennial in 2027, marking 100 years since its activation as the 18th Pursuit Group at Wheeler Field, Hawaii, on January 21, 1927.
Defense Contracts
France Picks SDTS, Babcock and Top Aces for Red Air Combat Training
France selected SDTS, Babcock France and Top Aces France to fly A-4N, Alpha Jet and L-39 Red Air training in a deal worth up to €450 million.

France’s Armed Forces Commissariat Service (SCA) has selected SDTS, Babcock France and Top Aces France to fly privately operated A-4N Skyhawks, Alpha Jets and L-39s as Red Air adversaries for French combat units. Top Aces puts the contract’s total value at up to €450 million for the three partners, over an initial six years with an optional two-year extension.
Babcock International announced the award on November 3, 2026, describing an eight-year contract with the SCA under which it will provide adversary training with SDTS and Top Aces France to combat units of the French Air and Space Force, Navy and Army. Top Aces followed with its own press release on November 9, 2026, saying the French Ministry of the Armed Forces and Veterans, acting through the Armed Forces Commissariat, selected a consortium led by SDTS with Babcock France after a competitive process.
Who flies what
The two announcements describe the division of work in slightly different terms. According to Babcock, it will maintain and operate its own fleet of upgraded L-39 aircraft from its Dijon-Bourgogne base, while SDTS will maintain and operate A-4N Skyhawk Advanced Aggressor Fighter and Alpha Jet aircraft supplied by Top Aces France.
Top Aces said its wholly owned subsidiary, Top Aces France SAS, will supply the upgraded A-4N Skyhawks, fitted with systems and sensors that simulate advanced air threats, along with the Alpha Jets. The company said French nationals will fly the aircraft through Top Aces France, working with SDTS and Babcock France, and that the fleet will operate across France so that training takes place close to the participating units.
Sorties, airspace and JTAC work
Babcock said the contractor aircraft will fly alongside the French Ministry of the Armed Forces’ Rafale and Mirage 2000 fleets in French airspace. Missions will start from military air bases and civilian airports across France, with up to 400 training sorties and more than 1,000 flying hours each year.
The L-39s will carry Remotely Operated Video Enhanced Receiver (ROVER) technology, which allows real-time video exchange between pilots and ground controllers. Babcock said training will range from basic visual-range air combat maneuvers to Joint Terminal Attack Controller (JTAC) training, aimed at improving controllers’ ability to coordinate air and ground fires, share tactical information, protect friendly forces, identify and designate targets and keep situational awareness.
Neither company has disclosed how many aircraft of each type are assigned to the contract, which air bases and airports beyond Babcock’s Dijon-Bourgogne base will host them, or when the first sorties will be flown.
What the companies said
Pierre Basquin, Chief Executive Aviation and CEO of Babcock France, called the contract “an important milestone for Babcock France,” saying the work prepares aircrew and military personnel “for complex, high-intensity missions.” He said Babcock is “proud to contribute to maintaining the operational readiness that is essential to mission success.”
Paul Bouchard, Chief Executive Officer of Top Aces Inc., said the company is “honoured to partner with SDTS and Babcock France” and that the award reflects “the growing demand among European allies for dedicated, high-quality adversary air capabilities.” Didier Toussaint, Top Aces’ Group President, International, said: “This contract represents an important milestone for Top Aces in France.”
Three operators with different French footprints
Top Aces
Top Aces was founded in 2000 by veteran Royal Canadian Air Force CF-18 pilots and has regional headquarters in Montreal, Hermannsburg in Germany and Mesa, Arizona. The company describes itself as operating the world’s largest fleet of commercially owned tactical fighter aircraft, including the only privately operated F-16s, and reports more than 160,000 accident-free hours. It also owns Blue Air Training, which it describes as a leader in close air support training.
Top Aces said the French award is its second long-term contract with a European NATO ally in 2026, after the renewed 10-year contract with the Bundeswehr, worth up to €420 million, earlier in the year.
Babcock France
Babcock describes the Red Air award as a strategic step into operational readiness and combat training support. Its website also describes the Jet Pilots Modernised Training Programme, formerly known as FOMEDEC, which Babcock delivers for the French Air Force at Cognac airbase. The programme page lists 17 twin-seat Pilatus PC-21 turboprop aircraft and an annual volume of 11,000 flight hours and 6,500 simulator hours under an 11-year contract.
On December 4, 2025, Babcock announced a contract supplying an L-39 to EPNER, the French test pilot school, with the aircraft also to serve in adversary simulation roles for flight testing. Basquin said at the time that the deal “paves the way for further opportunities,” particularly “in operational training and the training of international pilots.” Babcock’s November 3 announcement presents the new award as support for the operational training of combat units.
SDTS
SDTS, which Top Aces names as the consortium leader, is based in Saint-Gilles, France. Its website lists eight Aermacchi MB339 C jets and one CTSW microlight for its air-to-air and Red Air missions, says its pilots come from the French Air and Space Force or the French Navy, and describes towed aerial targets for air-to-air weapons training. Neither announcement mentions the MB339s as part of the new contract.
How the contract value is framed
The €450 million figure is a ceiling that covers all three partners, and neither company has given a split between them. Top Aces lists the expected duration of the contract and the combined revenue the partners will earn from it among the forward-looking statements in its release, which it says depend on estimates and assumptions and carry significant uncertainty.
The term is also described in two ways. Top Aces gives an initial six years with an optional two-year extension, while Babcock refers to an eight-year contract with the SCA.
Defense Contracts
AEVEX Wins Nearly $400 Million IDIQ for Unmanned Aircraft Systems
AEVEX says an unnamed U.S. customer gave it a multi-year IDIQ with a ceiling of nearly $400 million for unmanned aircraft systems.

AEVEX Corp. has been awarded an Indefinite Delivery/Indefinite Quantity (IDIQ) contract with a ceiling of nearly $400 million to supply unmanned aircraft systems (UAS) and associated support services to an unnamed U.S. customer, the company said on November 10, 2026. For scale, the Solana Beach, California, company reported funded backlog of $259.8 million at June 30, 2026; the new figure is a ceiling, and the announcement does not say how much has been ordered under the contract.
In a press release dated November 10, 2026, AEVEX said the multi-year award establishes a flexible contracting framework that lets the customer procure UAS and associated support services across a range of mission needs. The announcement came one day before the company’s scheduled third-quarter 2026 results.
What the IDIQ award covers
AEVEX said the contract validates growing demand for adaptable, scalable UAS capabilities and reinforces its role as a U.S.-based provider of mission-focused technology and engineering expertise. The company said it develops, produces and supports UAS designed for affordability, modularity and rapid fielding.
“This award deepens our role in helping customers field unmanned aircraft systems that can be manufactured at scale and adapted as mission needs evolve,” said Roger Wells, Chief Executive Officer at AEVEX.
Wells said in the release that the IDIQ positions AEVEX to support customers as they advance initiatives aimed at accelerating UAS capability development and more agile acquisition models.
The release leaves several questions open for operators and suppliers tracking the award. It does not identify the customer or the agency behind the award, give a period of performance beyond describing the award as multi-year, say whether other companies hold awards under the same vehicle, or disclose the value of any initial task order. It names no aircraft type and gives no quantities.
AEVEX’s position after its stock market listing
AEVEX describes itself as a U.S. defense technology company that delivers autonomous unmanned systems, AI-enabled mission software, and intelligence, surveillance and reconnaissance (ISR) and electronic warfare solutions to national security customers. In its initial public offering announcement, the company listed headquarters in Solana Beach with additional facilities in California, Florida, Ohio, Virginia and Alabama, and offerings that include UAS, what it called combat-proven loitering munitions, and multi-mission unmanned surface vehicles.
AEVEX priced its offering on April 16, 2026, at 16,000,000 Class A common shares at $20.00 each, with trading on the New York Stock Exchange (NYSE) under the ticker AVEX expected to begin on April 17, 2026, according to the company’s pricing announcement. The pricing followed the IPO plans AirPro News covered earlier in April. The company is a portfolio company of Madison Dearborn Partners’ funds, the announcement said.
In its second-quarter 2026 results, released on August 12, 2026, AEVEX reported revenue of $201.8 million, against $101.1 million a year earlier. Its Tactical Systems segment brought in $174.2 million, which the company said was driven by UAS products and support services; the results release cites $72.2 million from the EUCOM AOR Deep Strike program. Funded backlog fell to $259.8 million at June 30, 2026, from $503.1 million at December 31, 2025, which the company attributed mainly to revenue recognized on that program. AEVEX raised its full-year 2026 outlook to revenue of $700.0 million to $720.0 million.
A run of unmanned awards and what comes next
The new IDIQ follows a series of smaller awards that AEVEX has announced in 2026. Its second-quarter awards included an $18.5 million U.S. Air Force award for UAS delivery and engineering services and $50 million from the U.S. Air Force for advanced unmanned mission capabilities. In August 2026, the company announced a $41 million award to support U.S. government customers in delivering one-way attack systems, and on September 9, 2026, it announced $20.5 million in new awards to deliver and further develop one-way attack system capabilities for U.S. government customers.
On September 23, 2026, AEVEX announced its jet-powered Specter attack platform, a turbojet-powered one-way attack system still under development with advanced manufacturing company Divergent. The company said Specter will have ground-launched and air-launched variants and a modular, swappable nose section for kinetic, non-kinetic, electronic warfare and ISR payloads.
AEVEX said it will release third-quarter 2026 results after the close of U.S. financial markets on Wednesday, November 11, 2026, and hold a conference call at 5:00 p.m. Eastern Time that day. Wells and Chief Financial Officer Todd Booth are scheduled to present at the Baird Global Industrial Conference in Chicago on November 12, 2026. The IDIQ release does not say when the first orders under the contract are expected.
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