Title 50 › Chapter 55— DEFENSE PRODUCTION › Subchapter III— GENERAL PROVISIONS › § 4552
Defines key words used in this chapter. Critical component: parts, subsystems, special tools, or test gear needed to make, fix, or run weapons or other equipment the President says are essential to U.S. national security; parts found critical by a National Security Assessment or by a Presidential decision after a petition are treated as critical unless the President decides not to. Critical infrastructure: physical or cyber systems so important that their loss would badly hurt national security, the economy, or public health and safety. Critical technology: any technology the President names as essential to national defense. Critical technology item: materials that use or come from a critical technology. Defense contractor: anyone who has a contract with the U.S. to supply materials, industrial resources, critical technology, or services for national defense. Domestic industrial base: U.S. sources that supply or would be expected to supply materials or services for defense in peace, emergency, or war. Domestic source: a business that does almost all required R&D, engineering, manufacturing, and production in the United States or Canada and buys most parts from similar firms; for some national defense matters, Australia or the United Kingdom can count as domestic under narrow rules. Facilities: buildings, structures, or other property improvements (not farms, churches, or private homes) and services to use them. Foreign source: any business that is not a domestic source. Guaranteeing agency: a U.S. department or agency that buys goods or services for national defense. Homeland security: efforts to prevent terrorist attacks, reduce vulnerability, limit damage, and recover from attacks. Industrial resources: materials, services, processes, or manufacturing equipment needed to keep a modern defense industry. Materials: raw materials, commodities, articles, components (including critical components), products, supplies, and related technical information or services. National defense: programs for military and energy production or construction, defense or critical infrastructure aid to other countries, homeland security, stockpiling, space, emergency preparedness under the Stafford Act, and protecting or restoring critical infrastructure. Person: an individual, business, group, legal successor, or any state or local government or agency. Services: work needed for making or using industrial resources or critical technology items, building facilities, moving people or goods, or other defense activities. Small business concern: a business that meets the requirements of 15 U.S.C. 632(a) and related rules, including firms owned by socially and economically disadvantaged individuals or by women.
Full Legal Text
War and National Defense — Source: USLM XML via OLRC
Legislative History
Reference
Citation
50 U.S.C. § 4552
Title 50 — War and National Defense
Last Updated
Apr 5, 2026
Release point: 119-73not60