Defense & Military
US-China Aircraft Shelter Gap: A Critical Flaw in Deterrence
The US-China Aircraft Shelter Gap: A Critical Flaw in Deterrence
In the high-stakes game of military deterrence, the ability to protect assets on the ground is just as crucial as deploying advanced aircraft in the skies. A recent report from the Hudson Institute has highlighted a glaring vulnerability in U.S. airpower: the lack of hardened aircraft shelters (HAS) compared to China’s extensive fortifications. This disparity, often referred to as the “aircraft shelter gap,” poses a significant risk to U.S. deterrence capabilities, particularly in the Indo-Pacific region.
While China has invested heavily in building hundreds of hardened shelters over the past decade, the U.S. has constructed only a handful. This imbalance creates a destabilizing first-mover advantage for China, which could cripple American air power in a surprise attack. The report underscores the urgent need for the U.S. to enhance its airbase resilience to counter this growing threat.
The implications of this gap are profound. Without adequate protection, U.S. aircraft are vulnerable to precision missile strikes, which could ground operations and severely limit the ability to project power in a conflict. This article explores the significance of the aircraft shelter gap, its implications for U.S. deterrence, and the steps needed to address this critical vulnerability.
The Growing Disparity in Airbase Fortifications
China’s People’s Liberation Army (PLA) has made significant strides in fortifying its airbases, particularly in the Western Pacific. Over the past decade, China has built over 3,000 aircraft shelters, including hundreds of hardened shelters, and expanded its ramp area by nearly 75%. These shelters are designed to protect aircraft from missile strikes, ensuring that China’s airpower remains operational even under attack.
In contrast, the U.S. has added only two hardened shelters and 41 unhardened shelters at airbases within 1,000 miles of the Taiwan Strait since the early 2010s. This stark difference in investment has left U.S. airbases highly vulnerable to precision strikes. According to the Hudson Institute report, up to 90% of U.S. aircraft losses in a potential conflict with China could occur on the ground due to insufficient base protection.
The lack of hardened shelters is compounded by China’s advanced missile capabilities. The PLA Rocket Force has significantly expanded its arsenal of medium- and intermediate-range ballistic missiles, which can target U.S. airbases with devastating precision. In a sneak attack scenario, these missiles could crater runways, destroy command centers, and neutralize air defenses, leaving U.S. aircraft trapped on the ground.
“Regardless of how capable U.S. aircraft may be in the air, unless the Department of the Air Force rapidly enhances the resilience of its airfields, it is reasonable to expect that they will be crushed on the ramp.” — Timothy Walton, Hudson Institute
The Limitations of Agile Combat Employment
To mitigate the risks posed by China’s missile capabilities, the U.S. Air Force has developed the Agile Combat Employment (ACE) concept. This strategy involves dispersing small teams of Airmen and aircraft to multiple remote or austere bases, reducing the concentration of assets at any single location. While ACE is a valuable approach, it is not a complete solution to the problem of airbase vulnerability.
According to Timothy Walton, co-author of the Hudson Institute report, dispersal alone is insufficient. “If you just disperse, the Chinese can track you and just shoot you in those other places,” he explained. Worse, dispersal might lead U.S. assets to locations with even fewer defenses, making them easier targets. The report emphasizes that hardening and other passive defenses must be part of the equation to ensure the survivability of U.S. airpower.
Air Force leaders have acknowledged the need for more resilient basing in the Indo-Pacific theater. Chief of Staff Gen. David W. Allvin has stated that the Air Force is committed to building forward basing resilient enough to enable continued sortie generation, even while under attack. However, progress has been slow, and the current capabilities of both active and passive air defenses remain inadequate.
The Cost-Effectiveness of Passive Defenses
Passive defenses, such as hardened shelters, camouflage, and rapid runway repair, are among the most cost-effective ways to protect airbases. According to the RAND Corporation, these measures make it more costly for the enemy to target U.S. assets, thereby enhancing deterrence. A base with hardened shelters might require dozens of missiles to be neutralized, whereas a similarly sized base without shelters could be destroyed by just a few missiles.
Despite their effectiveness, passive defenses have been neglected in favor of more glamorous investments in advanced aircraft and active defense systems. Thomas Shugart, a co-author of the Hudson Institute report, noted that the Air Force would rather spend money on combat aircraft than on concrete. Additionally, military construction funds, which are approved separately by Congress, often prioritize domestic projects over overseas fortifications.
The imbalance in airbase fortifications between the U.S. and China creates a destabilizing first-mover advantage. China’s hardened shelters mean that the PLA would only need to fire about three-quarters as many munitions to neutralize U.S. airbases as the U.S. would need to neutralize PLA airbases. This disparity incentivizes China to strike first, undermining U.S. deterrence efforts.
Conclusion
The aircraft shelter gap between the U.S. and China represents a critical flaw in U.S. deterrence capabilities. Without adequate protection, U.S. airbases in the Indo-Pacific region are highly vulnerable to precision missile strikes, which could cripple American airpower in a conflict. The Hudson Institute report underscores the urgent need for a multi-year campaign to harden U.S. airbases and deploy both active and passive defenses.
Addressing this vulnerability will require a shift in priorities, with greater investment in passive defenses such as hardened shelters, camouflage, and rapid runway repair. While advanced aircraft and active defense systems are essential, they must be complemented by robust passive defenses to ensure the survivability of U.S. airpower. As the threat from China continues to grow, the U.S. must act swiftly to close the aircraft shelter gap and restore its deterrence capabilities in the Indo-Pacific region.
FAQ
Question: What are hardened aircraft shelters?
Answer: Hardened aircraft shelters (HAS) are reinforced structures designed to protect aircraft from missile strikes and other forms of attack. They are a key component of passive airbase defenses.
Question: Why is the U.S. lagging behind China in airbase fortifications?
Answer: The U.S. has prioritized investments in advanced aircraft and active defense systems over passive defenses like hardened shelters. Additionally, military construction funds are often allocated to domestic projects rather than overseas fortifications.
Question: What is the Agile Combat Employment (ACE) concept?
Answer: ACE is a U.S. Air Force strategy that involves dispersing small teams of Airmen and aircraft to multiple remote or austere bases to reduce the concentration of assets at any single location.
Sources: Air & Space Forces Magazine, The Defense Post, The War Zone
Defense & Military
Boeing Wins $552M Navy Contract for MQ-25A Stingray Production
The U.S. Navy awarded Boeing up to $552M to begin low-rate initial production of the MQ-25A Stingray unmanned tanker.
The Boeing Company has secured a contract modification valued at up to $552,053,000 from the U.S. Navy to begin low-rate initial production of the MQ-25A Stingray. The award transitions the world’s first fully integrated, carrier-based unmanned aerial vehicle from its development phase into active production.
Announced by the U.S. Department of Defense on September 14, 2026, the undefinitized, fixed-price-incentive modification covers the delivery of three Lot One aircraft and funds advance acquisition of long-lead components for three Lot Two airframes. The MQ-25A is designed to provide organic aerial refueling capabilities to Carrier Air Wings, a role that will free up manned F/A-18E/F Super Hornets for strike missions and extend their operational service life.
Production scope and timeline
The modification to a previously awarded firm-fixed-price advance acquisition contract obligates $164,428,480 at the time of award. This includes $100,000,000 in fiscal 2025 aircraft procurement funds and $64,428,480 in fiscal 2026 funds. Naval Air Systems Command (NAVAIR) is the contracting activity.
Work will be distributed across multiple North-American facilities. The majority of the Manufacturing will take place in St. Louis, Missouri, which accounts for 56 percent of the contract scope. Other significant locations include Torrance, California; Indianapolis, Indiana; and Quebec, Canada. The Department of Defense expects the work under this specific modification to conclude in July 2031.
Program milestones and development hurdles
The contract award follows a series of recent program milestones. On April 25, 2026, the Navy completed the first successful test flight of a production-representative MQ-25A. Less than a month later, Acting Secretary of the Navy Hung Cao granted Milestone C approval, officially authorizing the program to enter the Production and Deployment phase.
Capt. Daniel Fucito, the Unmanned Carrier Aviation Program Manager, highlighted the significance of the award in a Navy statement.
“Awarding this first LRIP contract marks a pivotal transition from development to operational reality and is a testament to the focused effort of our joint government and industry teams.”
The transition to production comes after the program navigated several development delays. According to the Pentagon’s April 2026 Modernized Selected Acquisition Report, technical risks and a labor strike at Boeing contributed to pushing the expected initial operational capability (IOC) to 2029. This represents a four-year delay from the program’s original timeline. Initial deliveries from the Lot One contract are also expected to begin in 2029.
The total program of record calls for 76 air vehicles. Seven test aircraft are currently in production at Boeing facilities in St. Louis and a dedicated MQ-25 site in Mascoutah, Illinois. Official sources show a slight discrepancy in the exact valuation of the new contract, with the Department of Defense listing a not-to-exceed value of $552,053,000 and a concurrent Navy release valuing the Lot One award at $562,000,000.
AirPro News analysis
Moving the MQ-25A into low-rate initial production is a critical milestone for both the U.S. Navy and Boeing. For the Navy, fielding an unmanned tanker capable of delivering 14,000 pounds of fuel over 500 nautical miles fundamentally alters carrier strike group geometry. It relieves the F/A-18E/F fleet from the heavy burden of buddy-tanking, preserving flight hours on tactical fighters for their primary combat roles.
For Boeing, locking in the LRIP contract provides stability to a defense program that has faced intense scrutiny over schedule slips. While the 2029 IOC target reflects the reality of recent supply chain and labor challenges, transitioning from test articles to production airframes indicates that the core technical risks are now manageable. We expect the focus will now shift heavily toward production scaling and the integration of the Stingray into the carrier air wing’s daily operational rhythm.
Sources: U.S. Department of Defense
Photo Credit: Boeing
Defense & Military
Lockheed Martin Vectis CCA Expands to Five Prototypes
Lockheed Martin Skunk Works expands Vectis to five prototypes, targeting first flight by end of 2027 and a $20M unit cost.
Lockheed Martin Skunk Works has expanded production of its internally funded Vectis uncrewed aircraft program to five prototypes, unveiling a full-scale model of the autonomous wingman on September 14, 2026, at the Air, Space & Cyber Conference in National Harbor, Maryland.
The expansion, announced via a company press release, signals Lockheed Martin’s continued investment in the Collaborative Combat Aircraft (CCA) space. The Vectis is designed to operate alongside crewed fighters such as the Lockheed Martin F-35 Lightning II and F-22 Raptor, utilizing the manufacturers‘s MDCX autonomy command and control platform.
Design and technical specifications
The Vectis is classified as a Group 5 uncrewed aircraft, weighing more than 1,320 pounds. It features a tailless, lambda-wing design measuring 34 feet in length with a 38-foot wingspan. The airframe incorporates a submerged dorsal engine inlet, a design choice intended to reduce frontal drag and minimize the risk of foreign object debris (FOD) ingestion.
This inlet configuration aligns with the U.S. Air Force (USAF) Agile Combat Employment (ACE) concept, which emphasizes operating from austere or debris-prone locations. The aircraft is powered by a Williams International FJ44-4 turbofan engine, which delivers 3,600 pounds of thrust. For combat operations, the Vectis includes an internal weapons bay capable of carrying munitions such as the AIM-120 advanced medium-range air-to-air missile.
Rapid development and production timeline
Lockheed Martin first unveiled the Vectis concept on September 21, 2025, and confirmed the selection of the Williams International engine on December 18, 2025. The program has utilized digital engineering to accelerate its timeline. According to the manufacturer, the project moved from the first drawing to a wind tunnel fly-off in less than two months. The first digital build was completed in six months, and the first physical part was released at the eight-month mark.
Ron Fehlen, Vice President and General Manager of Lockheed Martin Skunk Works, confirmed that development work on the four additional aircraft is already underway. The company is targeting the end of 2027 for the first flight of the Vectis prototype.
“The team is extremely excited as these parts start to come together, to actually get the wheels off the ramp by the end of 2027,” Fehlen stated.
Market positioning and cost targets
While Lockheed Martin was not selected for the first increment of the USAF CCA program, the company is positioning the Vectis for future increments and potential contracts with the U.S. Navy (USN) and U.S. Marine Corps (USMC). The USAF has publicly targeted a cost of approximately $20 million per CCA unit. Lockheed Martin has stated that the Vectis is targeting a competitive price point within this range, though exact unit costs remain undisclosed.
Fehlen noted that the aircraft is designed to be survivable, affordable, and flexible across a range of missions required by military customers.
AirPro News analysis
We view Lockheed Martin’s decision to self-fund four additional prototypes as a strategic commitment to remaining competitive in the autonomous combat aircraft market. By targeting the $20 million unit cost and emphasizing austere operational capabilities through the dorsal inlet design, the manufacturer is positioning Vectis as a mature, ready-to-produce option for future CCA increments. The rapid development timeline also demonstrates the efficacy of Skunk Works’ digital engineering processes, which will be critical for meeting the high-volume production demands anticipated for uncrewed wingman programs.
Sources: Lockheed Martin
Photo Credit: Lockheed Martin
Defense & Military
South Korea Approves $2.4B MH-60R Seahawk Acquisition
DAPA approved a $2.4B project to acquire ~20 MH-60R Seahawks for the Republic of Korea Navy, replacing its Westland Lynx fleet.
This article summarizes reporting by Asiae.
South Korea’s Defense Acquisition Program Administration (DAPA) approved a 3.24 trillion won ($2.4 billion) project on September 15, 2026, to acquire approximately 20 additional Lockheed Martin MH-60R Seahawk helicopters for the Republic of Korea Navy (ROKN). The acquisition, scheduled to run from 2025 through 2032, will replace the navy’s aging fleet of shipborne Westland Lynx helicopters and expand its anti-submarine warfare capabilities.
The approval of the Maritime Operational Helicopter-II project follows a May 18, 2026, clearance by the U.S. State Department for a potential $3 billion Foreign Military Sale of up to 24 MH-60R airframes to South Korea. According to reporting by Asiae, the final number of helicopters will be solidified during concluding contract negotiations, though DAPA currently projects a fleet addition of around 20 aircraft.
Expanding the Republic of Korea Navy fleet
The ROKN is already in the process of integrating the Lockheed Martin MH-60R Seahawk into its frontline operations. South Korea signed an initial $878 million contracts in December 2020 for 12 of the maritime helicopters. The first airframe from that order was delivered in December 2024.
Operational deployment of the initial batch began recently, with the first two Seahawks entering active service on April 1, 2026, at the 62nd Maritime Aviation Squadron based in Jinhae. The newly approved second batch will significantly increase the ROKN’s operational footprint and surface fleet integration.
Brigadier General Kang Seong-kwon, head of the Aircraft Business Division at DAPA, highlighted the platform’s multi-role utility during the procurement process.
“The new MH-60R maritime operational helicopter is capable of performing various missions, including anti-submarine, anti-ship, and search and rescue operations,” Kang stated.
Technical specifications and parallel defense projects
The Lockheed Martin MH-60R Seahawk is designed for a maximum takeoff weight of 10.2 tons and can reach a maximum speed of 180 knots. The platform is equipped with advanced sensor suites and weapon systems tailored for detecting and neutralizing underwater and surface threats, a critical requirement for South Korea’s maritime defense strategy.
During the same September 15, 2026, Defense Project Promotion Committee meeting, DAPA authorized a separate 2.16 trillion won initiative. This parallel project aims to indigenously develop vertical takeoff and landing (VTOL) reconnaissance unmanned aerial vehicles (UAVs) by 2036, further modernizing the country’s aerial surveillance capabilities.
AirPro News analysis
We view DAPA’s rapid follow-on order for the Lockheed Martin MH-60R Seahawk as a strong indicator of the ROKN’s satisfaction with the initial 2020 batch. Transitioning from the legacy Westland Lynx to a unified fleet of MH-60Rs streamlines maintenance, training, and interoperability with United States Navy assets operating in the Indo-Pacific region. The slight discrepancy between the U.S. State Department’s approval for 24 airframes and DAPA’s stated goal of “approximately 20” is standard in Foreign Military Sales, where the maximum approved quantity often provides a buffer for final budget negotiations and equipment configurations.
Sources: Asiae
Photo Credit: Lockheed Martin
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