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Understanding the Defense Industrial Base Sector

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The Defense Industrial Base (DIB) Sector includes hundreds of thousands of domestic and foreign entities and subcontractors that perform work for the Department of Defense (DOD) and other Federal departments and agencies. These entities research, develop, design, produce, deliver, and maintain military weapons systems, subsystems, components, or parts. Defense-related products and services provided by the DIB Sector equip, inform, mobilize, deploy, and sustain forces conducting military operations worldwide.

The size and diversity of the sector results in an extraordinarily large and complex collection of industrial sites and operators across 15 subsectors and more than 90 segments governed by multiple regulations, laws, treaties, and precedents.

Sector-Specific Agency (SSA): SSAs are Federal departments and agencies identified under Homeland Security Presidential Directive 7 as responsible for the protection activities in specified critical infrastructure sectors. DOD serves as the SSA for the Defense Industrial Base Sector.

Related Sectors: The Defense Industrial Base Sector shares dependencies and interdependencies with other critical infrastructure sectors, including: Communications, Critical Manufacturing, Energy, Information Technology, and Transportation Systems.

Quick Facts

The Defense Industrial Base (DIB) includes hundreds of thousands of worldwide industrial facilities, ranging from small businesses to Fortune 500 corporations employing tens of thousands of people.