National Security or Protectionism? The Debate Over Domestic-Only Space Supply Chains

Key Takeaways

• Domestic-only space procurement can protect a few sensitive nodes and still weaken the wider base.
• Trusted-allied sourcing usually expands capacity faster than strict home-country exclusivity.
• The strongest policy target is qualified bottlenecks, not every imported bolt, chip, or valve.

The slogan is easy. The factory floor is not.

“Buy domestic” sounds clean because it turns a messy industrial problem into a moral one. A country either supports its own firms or it does not. In the space sector, that framing breaks down almost at once. A launch vehicle assembled in the United States can depend on machine tools from Japan, software built by a supplier with teams across Europe, specialty chemicals refined in South Korea, and test equipment whose deepest parts chain back to producers spread across more than one allied market. A satellite sold as domestic can still contain sensors, semiconductors, optical coatings, connectors, memory, and manufacturing equipment that come from a much larger industrial web.

That is why the domestic-only argument attracts support at the level of politics and loses clarity at the level of production. It speaks to fear of dependency, fear of espionage, fear of sanctions, fear of war, and fear that public money will build foreign capacity instead of local jobs. Those concerns are real. They are not invented by lobbyists. The trouble is that the same slogan is used for two different projects. One is a security program for a narrow set of vulnerable technologies. The other is an industrial preference program that shields favored producers from outside competition even when the real security gain is small.

The space business has become especially vulnerable to this confusion because its supply chains are thin, qualification cycles are long, and public buyers still shape a large share of demand. A new analysis published on New Space Economy described a U.S. supply chain under mounting pressure from demand growth, aging facilities, supplier concentration, and inconsistent public demand signals. That diagnosis fits more than the United States. Across the sector, governments are trying to solve fragility with procurement rules. Some of those rules are sensible. Some are not.

This article takes a clear position. Domestic-only space supply chains make sense in a narrow band of security-sensitive areas, especially where classified payloads, military communications, trusted microelectronics, encryption, launch assurance, or sovereign command functions are at stake. Outside that band, domestic-only rules usually become a disguised form of protectionism. They raise cost, slow production, weaken allied industrial ties, and can leave the very national space programs they were meant to defend with fewer qualified suppliers.

Trusted is not the same as domestic

The first mistake in this debate is to treat domestic content and trusted content as the same thing. They are not. A supplier can be foreign and still be part of a long-standing defense or civil-space alliance network. A supplier can also be domestic and still present concentration, cyber, financial, labor, or capacity risks. The right question is not “Was it made here?” The right question is “Can this source be trusted under stress, and is there more than one way to get the item when the system is under pressure?”

Public procurement law already reflects this distinction, even when politicians blur it. The World Trade Organization Government Procurement Agreement is built around non-discrimination in covered procurement, and its text bars offsets in those cases while preserving a security exception for arms, war materials, and procurement considered indispensable for national security or national defence. That structure matters. It does not tell governments to ignore security. It tells them not to dress routine industrial preference up as security when what they really want is domestic patronage.

The same tension appears inside the United States. The Federal Acquisition Regulation rules on covered procurement sit beside domestic preference rules, and the Buy American content thresholds used in defense procurement now step upward over time. That is not a fully closed system. It still makes room for qualifying-country treatment and other exceptions because Washington knows complete exclusion would damage access, cost, and program timing. Even in a more nationalist procurement climate, the legal architecture still assumes some degree of allied sourcing.

That is where a lot of domestic-only rhetoric quietly changes shape. It starts as a call for independence and ends as a narrower call for preferred geographies, approved jurisdictions, and trusted industrial clubs. In practice, that is often the wiser policy. NASA’s Office of Small Business Programs has framed supply-chain work around gap-filling and subcontracting resilience rather than a fantasy of total national self-sufficiency. AIA’s 2026 space priorities use similar language, pairing domestic manufacturing and workforce support with commercial integration and regulatory modernization. Industry knows that a space economy built only inside one national fence would be smaller, slower, and more brittle than the public slogans imply.

Space manufacturing does not behave like ordinary manufacturing

A chip shortage is a problem in any industry. In space, the same shortage can become a program delay measured not in weeks but in quarters or years. That is because the part itself is only half the issue. The rest sits in design approval, mission assurance, radiation performance, environmental testing, software integration, export-control classification, customer acceptance, and insurance. When people outside the sector ask why a company does not “just switch suppliers,” they are usually describing a world that does not exist.

A satellite bus, a reaction wheel, a power subsystem, a harness assembly, a flight computer, or a separation system can have a tiny bill of materials next to an automobile or a phone. Even so, the value of a qualified part is much higher because failure costs are so severe and replacement paths are so narrow. One imported item can hold up thermal-vacuum testing, launch integration, export paperwork, customer reviews, and revenue recognition. The economic effect is much larger than the invoice value of the part.

This is why domestic-only rules often disappoint even their supporters. They try to use nationality as a proxy for resilience in an industry where resilience comes from qualified redundancy, long planning horizons, and predictable demand. If a nation excludes a trusted allied supplier before a domestic second source is actually ready, the result is not sovereignty. It is self-inflicted scarcity. That is a political win in a press release and a manufacturing loss on the floor.

The Aerospace Industries Association has spent much of the past two years warning about this mismatch. Its 2026 policy material links supply-chain resilience to stable funding, modernized regulation, domestic manufacturing capacity, and small business innovation rather than to crude geographic closure. That framing is more useful than the domestic-only slogan because it targets the sources of delay that matter most. Suppliers invest when they can see demand. They do not build extra clean-room, materials, or test capacity simply because a minister or senator says that imports are bad.

The least settled question is how far that logic runs in a real security crisis. It is easy to say that allies will deliver in peacetime and much harder to know what happens when every allied ministry is filling its own orders first. That uncertainty should not be ignored. It should also not be exaggerated into an argument for sealing off the entire industrial base. A country that tries to localize everything in advance usually ends up underbuilding capacity where it counts and overpaying in product categories that never needed full localization in the first place.

The American version of the argument

The United States has the most fully developed domestic-only rhetoric in the Western space sector because it combines military demand, civil-space prestige, a large federal procurement footprint, and a long-running political tradition of using public contracts to support national manufacturing. That does not mean Washington has achieved full independence. It means the language of independence is more elaborate there.

The 2022 changes to Buy American requirements in the Federal Acquisition Regulation raised domestic content thresholds over time. Under the defense-side clause structure, content thresholds tied to domestic and qualifying-country components run at 65 percent for contracts awarded in calendar years 2024 through 2028 and 75 percent from 2029 onward. Those thresholds are substantial. They also show the limits of the domestic-only idea, because qualifying-country treatment remains part of the design. Washington tightened domestic preference while still preserving room for aligned foreign production.

That is not a contradiction. It is an admission that the United States cannot, at acceptable cost, source every space-relevant input entirely from home-country factories. The same government that promotes domestic sourcing also relies on procurement rules that acknowledge treaty commitments, allied production, and practical exceptions. It is building a preference system, not a sealed national economy.

Security pressures make the American case more intense. A NASA Office of Inspector General memorandum released in February 2025 noted seven investigations related to inappropriate associations with China and unauthorized access to export-controlled information. That is not a theoretical concern. It is a reminder that foreign dependence can be tied to security, compliance, and intelligence risk in ways procurement officers cannot brush aside. The same memo also points to the machinery of export enforcement, including NASA’s participation in the federal Export Enforcement Coordination Center. When security officials talk about supply chains, they are not speaking only about price.

That said, Washington often overlearns from real risks. It can react to a narrow vulnerability by expanding domestic preference logic into areas where the actual exposure is modest. A classified military payload, a hardened onboard processor, or a secure crosslink subsystem is one thing. Routine support equipment, commoditized materials, or components available from deeply trusted allies are something else. The policy temptation is to collapse those categories into one patriotic bucket. That move is politically efficient and industrially wasteful.

The NASA small business engagement program focused on supply-chain gaps points toward a better approach. Instead of pretending every supplier shortfall can be fixed with exclusion, it tries to broaden the subcontracting base and match demand with firms that can fill real gaps. That is slower, less theatrical, and much more likely to leave the industrial base stronger five years later.

Europe is building sovereignty, not isolation

The European Union uses a different vocabulary. Brussels talks more about sovereignty, autonomy, resilience, and a single market than about buying only from domestic firms. Even so, the underlying tension is similar. Europe wants local capability in launch, secure communications, space services, microelectronics, and digital infrastructure, but it does not want to destroy the cross-border industrial fabric that makes the region’s space sector viable.

The European Space Agency has long operated with an industrial policy shaped by the geographical return principle. ESA says industrial activity in each member state should be commensurate with that state’s funding and that the agency should give preference, to the fullest extent possible, to industry in all member states. That is not free-market procurement. It is structured industrial balancing. Yet it is not the same as home-country closure either. It spreads work across a multinational bloc and uses procurement to sustain industrial competence inside that bloc.

That model has strengths and weaknesses. It supports political cohesion, keeps member states invested in common programs, and makes it easier to defend public spending across many capitals. It can also fragment work, preserve subscale capacity, and make purely economic sourcing less likely. Even so, it is a form of strategic burden-sharing, not a demand that every state build the whole stack alone.

The IRIS² secure connectivity program shows what modern European sovereignty looks like. The European Commission signed the concession contract in December 2024 for a multi-orbital constellation of 290 satellites, explicitly tying the project to secure connectivity and European sovereignty. The point is not to ban every foreign input. The point is to make sure Europe controls a service layer it regards as too important to outsource. That is a different and more defensible target than trying to localize every component in every subsystem.

The EU Space Act proposed in June 2025 carries the same logic. The Commission describes it as a harmonized framework for safety, resilience, and sustainability that reduces regulatory fragmentation and supports competitiveness. That matters because one of Europe’s recurring problems has not been foreign sourcing alone but internal fragmentation. A continent can talk about sovereignty all day and still undermine its own suppliers if 13 or more national approaches force duplicated compliance and higher cost.

The United States understands that point better than public rhetoric suggests. In its comments on the EU Space Act consultation, the U.S. government argued for equivalence arrangements so that the EU framework would not damage transatlantic supply chains or force duplicative compliance on firms operating across both markets. That is a revealing moment. Washington promotes domestic industry at home while asking Europe not to harden its rules in ways that burden American-linked supply chains. The contradiction is not hypocrisy alone. It is evidence that every large space power wants sovereignty for itself and flexibility when dealing with allies.

When domestic-only rules make sense

The best argument for domestic-only procurement appears where supply risk and mission sensitivity combine. That includes launch for certain national-security missions, protected military communications, encrypted ground systems, classified payload handling, some space-domain-awareness functions, and portions of trusted microelectronics. In those areas, governments are not just buying hardware. They are buying assurance about custody, access, repair, cyber exposure, data rights, operational continuity, and political reliability under extreme conditions.

Take trusted microelectronics. A secure satellite or missile-warning architecture does not only depend on whether a chip works in orbit. It depends on whether officials know how the part was designed, fabricated, packaged, tested, updated, and handled. The Defense Microelectronics Activity exists for exactly that kind of assurance problem. The state is not being irrational when it demands tighter control over these inputs. It is responding to a chain-of-custody problem that market price does not solve.

The same logic applies to export-controlled space technology. NASA, the Bureau of Industry and Security, and the Directorate of Defense Trade Controls do not maintain export-control systems out of habit. They do so because some technologies carry military or dual-use significance that changes the procurement calculation. A cheap foreign component is not attractive if it introduces a compliance failure, a denial risk, or a vulnerability that cannot be inspected away.

Domestic-only rules can also be justified where a government is deliberately paying to preserve surge capacity. A nation may keep launch integration, propellant production, secure timing infrastructure, or onboard-computing capability at home because it expects wartime disruption or diplomatic coercion. That is not protectionism in any shallow sense. It is insurance. The mistake appears when policymakers expand the insurance principle into a universal rule and forget that insurance has a price. If every item is treated as mission-essential, governments spread support too thin and miss the few places where loss of supply would actually break the system.

Where the policy becomes protectionism

Domestic-only policy turns protectionist when it blocks allied or mixed-origin supply even though the security gain is minor and the industrial cost is high. That shift can be spotted by asking a few direct questions. Is the item security-sensitive in itself, or is it politically symbolic? Does excluding outside supply create a viable second source, or does it just narrow the market? Will the domestic rule create scale over a reasonable period, or will it trap the buyer with a small pool and permanently higher cost? Is the excluded source a geopolitical rival, or a treaty ally whose industry already participates in shared programs?

In many cases the answer reveals ordinary industrial favoritism. A government prefers local assembly, local payrolls, local ribbon cuttings, and local lobbyists. Those are understandable political incentives. They do not become national-security necessities by repetition. Once that line blurs, domestic-only procurement can produce a chain of bad outcomes: thinner competition, weaker incentives to improve quality, delayed qualification of alternatives, and persistent dependence on a single home-country champion that becomes too big to challenge.

This pattern is especially risky in the space sector because public buyers often help decide who survives long enough to scale. A badly designed domestic preference can freeze market structure before the technology base matures. Instead of creating resilience, it can create a protected incumbent whose delays are absorbed because there is nowhere else to go. The result looks patriotic from the capital city and feels monopolistic to everyone trying to deliver hardware on schedule.

The WTO Government Procurement Agreement is useful here because it captures the principle that covered procurement should avoid discrimination and should not impose offsets, while still permitting real security exceptions. That is a sensible dividing line. A state can say, with legal and strategic coherence, that some procurements are indispensable for national defence and must be handled differently. What it cannot defend as easily is using that language as a routine cover for steering ordinary work to politically connected domestic firms.

Qualification is the real choke point

A strange feature of this debate is how often nationality gets discussed while qualification gets ignored. For most satellite and launch programs, the hard part is not finding a company somewhere on earth that can manufacture something similar. The hard part is finding a supplier whose part is already accepted by design teams, customers, insurers, regulators, and test data packages. That is where schedules get trapped.

This is why selective allied sourcing is often stronger than blanket localization. If the real problem is a single qualified source, adding a second trusted and qualified supplier in an allied country can improve resilience much faster than trying to build a new domestic supplier from scratch. The domestic project may still be worth funding. It just should not be confused with the immediate fix. Policymakers who collapse those time horizons tend to promise resilience now and deliver it years later, if at all.

The Center for Security and Emerging Technology has argued for the value of redundancy and competition in launch because even a successful firm can become a single point of failure. That logic applies below the prime level as well. A national flag on the supplier does not solve single-point dependence if only one qualified producer remains.

The practical implication is uncomfortable for domestic-only advocates. The smartest state may have to buy some near-term resilience from abroad while financing home-country capacity for the longer run. That is not ideological impurity. It is industrial sequencing. It also explains why governments that speak most loudly about independence often rely, quietly, on mixed-origin supply while their domestic alternatives are still years from dependable output.

Capital goes where demand can be seen

Suppliers do not add clean rooms, metallization lines, foundry access, coatings capacity, or test staff because officials make speeches about resilience. They invest when they can see steady orders, survivable margins, and procurement rules that will still exist after the next election cycle. A domestic-only rule without predictable volume can leave firms stranded in a half-built state, too protected to compete globally and too small to achieve scale at home.

That is why stable demand matters more than rhetorical intensity. AIA’s 2026 space priorities emphasize funding stability, commercial integration, infrastructure, manufacturing, workforce, and small business programs. Those are not glamorous talking points. They are the conditions under which suppliers decide whether to hire, tool up, qualify second sources, or endure the long payback periods that space production often requires.

The problem becomes sharper for smaller firms. A domestic-only policy can sound friendly to local suppliers while actually making life harder for them. If the rule narrows the buyer base to one government customer with uncertain appropriations, a small manufacturer may face larger cash-flow risk than it would in a mixed market that includes allied civil and defense demand. Protection can become confinement.

That is part of the reason AIA supported reauthorization of SBIR and STTR in January 2026. The warning was simple: funding disruptions hurt innovation, small businesses, and the industrial base. This is a larger lesson for the domestic-only debate. Procurement preference by itself does not create capacity. Capacity grows when finance, demand, qualification, and workforce planning line up over time.

The ally question is not a side issue

Every country pursuing space sovereignty has to decide whether trusted-allied sourcing is a fallback or a standing pillar of policy. That choice is far more important than most political speeches admit. If allied sourcing is treated as a grudging exception, buyers will underinvest in cross-border integration, common standards, and reciprocal market access. If it is treated as part of the design, countries can preserve domestic strength while also widening the pool of qualified production.

That approach already appears in practice. The European Space Agency’s industrial policy and geographical return system distribute work across a political community rather than inside a single nation. U.S. procurement law preserves spaces for treaty-based and qualifying-country treatment. The EU secure connectivity program is explicitly sovereign in service design while still relying on structured public-private cooperation. These are not examples of autarky. They are examples of controlled interdependence.

The debate turns sour when policymakers treat interdependence as weakness in itself. Some dependence is dangerous. Some is the price of scale. Some is the price of allied integration. Some is simply a consequence of the fact that the most advanced manufacturing tools and materials do not live inside one set of borders. Space systems sit at the intersection of all of those realities. Treating them as if they were ordinary patriotic consumer goods leads to bad policy.

A harder line, where it belongs

The strongest version of the domestic argument is not economic nationalism. It is targeted denial of dependency on geopolitical rivals in a small set of high-leverage technologies. That is the position this article supports. It is reasonable to keep certain mission functions, secure communications paths, launch options, encrypted payload handling, and trusted processing paths under tighter home-country or tightly allied control. It is also reasonable to refuse suppliers linked to adversarial states in categories where inspection cannot neutralize hidden risk.

What does not make sense is taking that hard line and spreading it across the whole procurement map. A blanket domestic-only rule can block allied semiconductor packaging, specialty metals, machining, optics, testing services, or software support without any matching security benefit. In those cases the policy becomes a tax on the state’s own space ambitions. It makes moon programs, military constellations, Earth-observation services, and secure communications projects more expensive than they need to be.

The record from export control and procurement law supports this narrower approach. NASA’s export-control compliance work is focused on actual sensitive technologies and associations, not on a total ban on foreign contact. The WTO procurement framework preserves security exceptions rather than assuming every procurement is a security matter. The EU Space Act is structured around safety, resilience, and sustainability, not a declaration that every non-EU input is suspect. The law, in other words, is already narrower than the rhetoric.

What smart sovereignty would look like

A workable sovereignty strategy starts by mapping failure consequences rather than by waving a flag over the full bill of materials. Which items would stop launches, cripple secure networks, freeze on-orbit operations, or expose sensitive data if a rival cut them off tomorrow? Which items could be replaced through allied sources in six months? Which ones could be dual-sourced with modest design work? Which ones are so specialized and so thinly supplied that public capital should be used to build enduring local capacity?

Once those questions are answered, governments can sort inputs into at least three groups. The first group should stay under domestic or tightly allied control because interruption would directly damage national security or sovereign service continuity. The second group should be sourced from trusted-allied networks with deliberate second-source planning. The third group should stay open to competitive international supply as long as compliance, traceability, and performance standards are met. That is not an elegant slogan. It is far more likely to work.

Smart sovereignty also needs better demand behavior from the state. Governments cannot preach resilience while issuing stop-start budgets, shifting technical requirements late, or taking years to award contracts that suppliers have already staffed for. If public buyers want more domestic capacity, they have to behave like customers building an industry, not like temporary patrons distributing symbolic favors.

The Office of Strategic Capital reflects part of this shift by directing credit-based tools toward technologies and their supply chains that matter for national security. That kind of financing logic is more productive than a generic buy-local command because it matches support to bottlenecks that private capital may underfund. Public money can be deployed where fabrication, packaging, materials processing, or specialized testing need longer payback periods than commercial investors prefer.

A similar lesson applies to Europe. The IRIS² constellation and the EU Space Act show a region trying to combine sovereign capability with a larger integrated market. That is a better direction than every member state chasing miniature self-sufficiency. Europe’s problem has often been fragmentation, not too much openness. The answer to fragmentation is coordination, not twenty-seven separate industrial fortresses.

What domestic-only advocates get right, and what they miss

Advocates of strict domestic sourcing are right about one thing above all others. The market will not automatically preserve strategically useful capacity. If a rad-tolerant electronics line, a propulsion component maker, or a specialty materials processor becomes uneconomic in peacetime, it can disappear long before a government realizes how much depended on it. Rebuilding that capability later is difficult, expensive, and sometimes impossible on the timeline a crisis allows.

They also understand that public procurement is never neutral. Every large space contract shapes the industrial base. Every sourcing rule teaches suppliers where to invest and whom to hire. Every launch award, constellation contract, ground-system order, or secure satcom program creates or destroys future capability. Pretending that procurement can be blind to national outcomes is not realistic.

What they miss is the cost of treating all foreign supply as equally dangerous. Allied capacity is not the same as adversarial capacity. Distributed supply is not the same as uncontrolled supply. Openness with standards is not the same as vulnerability. A country can become safer by deepening industrial ties with trusted partners while localizing only the nodes that truly require sovereign custody. That path is less satisfying as political theater because it does not fit on a bumper sticker. It is much stronger as industrial policy.

Summary

The debate over domestic-only space supply chains is often framed as a test of national will. It is not. It is a test of whether governments can distinguish between valuable sovereignty and expensive symbolism. In the space sector, that distinction matters because procurement choices echo for years through launch schedules, constellation timelines, supplier survival, and military readiness.

A state that localizes everything will pay more and still remain dependent, because modern space hardware sits on tools, materials, and production systems no single nation fully owns. A state that localizes nothing will leave itself exposed to coercion, sanctions, espionage risk, and crisis-driven allocation fights. The workable position lies between those poles, but it is not a soft middle. It is a hard-edged program of selective control, allied integration, second-source development, stable public demand, and targeted finance for the bottlenecks that could actually shut a national space program down.

The new point is this: domestic-only policy is often defended as discipline, yet in practice it can become an excuse to avoid choosing. If every input is declared strategic, policymakers never have to rank priorities, never have to say which dependencies matter most, and never have to explain why some protected suppliers are worth the cost while others are not. The better path is more demanding. It forces governments to choose, fund, and defend a short list of real industrial priorities, and to leave the rest to competitive supply that includes trusted allies.

Appendix: Top 10 Questions Answered in This Article

What is the difference between a domestic-only space supply chain and a trusted-allied supply chain?

A domestic-only supply chain tries to keep sourcing inside one country. A trusted-allied supply chain allows sourcing from aligned countries that meet shared security, compliance, and reliability standards. The second model usually widens capacity and lowers single-source risk without giving up control over sensitive mission areas.

Why do governments push for domestic sourcing in the space sector?

Governments use domestic sourcing to reduce exposure to sanctions, espionage, political coercion, and wartime disruption. They also use procurement to preserve industrial skills, keep public spending tied to local employment, and maintain surge capacity for missions tied to national security. In space, those motives are stronger because some systems support military and sovereign communications functions.

When does domestic-only procurement make strategic sense?

It makes the most sense when a component, service, or production path is directly tied to classified missions, protected military communications, trusted processing, encrypted infrastructure, or launch assurance for national-security payloads. In those cases the state is buying custody, continuity, and control, not just a part. The narrower the mission sensitivity, the stronger the case for home-country restriction.

When does domestic-only space policy become protectionism?

It becomes protectionism when governments block outside supply without a meaningful security gain. That usually happens when allied sources are excluded from ordinary procurements even though they meet the same performance and compliance standards. The result is often higher cost, less competition, and slower production rather than stronger resilience.

Why is qualification more important than nationality for many space components?

Space hardware has to pass design reviews, testing, customer acceptance, and mission assurance checks before it can fly. A supplier may exist on paper, but if its product is not already qualified, switching can take months or years. That makes the number of accepted suppliers more important than the passport of a firm in many non-sensitive categories.

How do procurement rules already reflect this debate?

Trade and procurement rules often combine non-discrimination with security exceptions. Domestic preference laws, qualifying-country treatment, and national-security carve-outs show that governments already distinguish between ordinary buying and sensitive procurement. The legal structure is usually more selective than the public rhetoric.

How does Europe approach sovereignty in space procurement?

Europe tends to pursue sovereignty through coordinated regional capacity rather than strict national closure. ESA uses industrial balancing across member states, and the EU is building programs such as IRIS² and the EU Space Act to reduce fragmentation and secure important services. That model seeks control over service layers and standards while keeping a wider industrial base connected.

What is the main weakness of a blanket domestic-only policy?

Its main weakness is that it can reduce resilience while claiming to increase it. Excluding trusted outside supply before home-country alternatives are fully ready can create shortages, delay missions, and strengthen protected incumbents. That leaves the state with fewer choices and often worse bargaining power.

How should governments decide what to localize?

Governments should rank inputs by the damage that a disruption would cause. Items that would stop launches, break secure communications, expose sensitive data, or halt sovereign service delivery deserve tighter control. Items that can be sourced safely through trusted allies should be handled through redundancy and qualification planning instead of blanket exclusion.

What does a stronger long-term policy look like?

A stronger policy combines selective localization, trusted-allied sourcing, second-source development, stable demand signals, and targeted public finance for the hardest bottlenecks. It also depends on disciplined procurement behavior, because suppliers invest when they can see predictable orders and clear technical requirements. That approach is less dramatic than domestic-only slogans, but it leaves the industrial base in better shape.