Title 6Domestic SecurityRelease 119-73not60

§821 Definitions

Title 6 › Chapter 2— NATIONAL EMERGENCY MANAGEMENT › Subchapter II— COMPREHENSIVE PREPAREDNESS SYSTEM › Part F— Global Catastrophic Risk Management › § 821

Last updated Apr 3, 2026|Official source

Summary

Defines key words used in this part. Administrator is the head of FEMA. Basic need is anything needed to protect health, safety, and general welfare, including food, water, shelter, basic communications, sanitation and health services, and public safety. Catastrophic incident is a natural or man-made disaster that causes extreme casualties, damage, mass evacuations, or major disruption to people, infrastructure, environment, economy, national morale, or government; it can be long-lasting, overwhelm state and local resources, or so disrupt government and emergency services that national security could be threatened. Critical infrastructure, Indian Tribal government, local government, and State use the meanings in other laws (see 42 U.S.C. 5195c(e) and 42 U.S.C. 5122). Existential risk is the potential for human extinction. Global catastrophic risk is the risk of events that seriously harm or set back civilization worldwide. Global catastrophic and existential threats are risks that could cause systemwide failure or great harm to civilization, such as severe pandemics, nuclear war, asteroid or comet impacts, supervolcanoes, sudden severe climate change, or harms from emerging technologies. National exercise program means activities to test the national preparedness goal and related plans under section 748(b) of this title. Secretary is the Secretary of Homeland Security.

Full Legal Text

Title 6, §821

Domestic Security — Source: USLM XML via OLRC

In this part:
(1)The term “Administrator” means the Administrator of the Federal Emergency Management Agency.
(2)The term “basic need”—
(A)means any good, service, or activity necessary to protect the health, safety, and general welfare of the civilian population of the United States; and
(B)includes—
(i)food;
(ii)water;
(iii)shelter;
(iv)basic communication services;
(v)basic sanitation and health services; and
(vi)public safety.
(3)The term “catastrophic incident”—
(A)means any natural or man-made disaster that results in extraordinary levels of casualties or damage, mass evacuations, or disruption severely affecting the population, infrastructure, environment, economy, national morale, or government functions in an area; and
(B)may include an incident—
(i)with a sustained national impact over a prolonged period of time;
(ii)that may rapidly exceed resources available to State and local government and private sector authorities in the impacted area; or
(iii)that may significantly interrupt governmental operations and emergency services to such an extent that national security could be threatened.
(4)The term “critical infrastructure” has the meaning given such term in section 5195c(e) of title 42.
(5)The term “existential risk” means the potential for an outcome that would result in human extinction.
(6)The term “global catastrophic risk” means the risk of events or incidents consequential enough to significantly harm or set back human civilization at the global scale.
(7)The term “global catastrophic and existential threats” means threats that with varying likelihood may produce consequences severe enough to result in systemic failure or destruction of critical infrastructure or significant harm to human civilization. Examples of global catastrophic and existential threats include severe global pandemics, nuclear war, asteroid and comet impacts, supervolcanoes, sudden and severe changes to the climate, and intentional or accidental threats arising from the use and development of emerging technologies.
(8)The term “Indian Tribal government” has the meaning given the term “Indian tribal government” in section 5122 of title 42.
(9)The terms “local government” and “State” have the meanings given such terms in section 5122 of title 42.
(10)The term “national exercise program” means activities carried out to test and evaluate the national preparedness goal and related plans and strategies as described in section 748(b) of this title.
(11)The term “Secretary” means the Secretary of Homeland Security.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

section 5195c(e) of title 42, referred to in par. (4), was in the original “section 1016(e) of the Critical Infrastructure Protection Act of 2001” and was translated as reading “section 1016(e) of the Critical Infrastructures Protection Act of 2001”, to reflect the probable intent of Congress.

Reference

Citations & Metadata

Citation

6 U.S.C. § 821

Title 6Domestic Security

Last Updated

Apr 3, 2026

Release point: 119-73not60