Defense Threat Reduction Agency

E74961

U.S. Department of Defense agency United States defense agency

The Defense Threat Reduction Agency is a U.S. Department of Defense organization responsible for safeguarding the United States and its allies from weapons of mass destruction and emerging threats.

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All labels observed (10)

Label	Occurrences
Defense Threat Reduction Agency canonical	12
Defense Nuclear Agency	2
DTRA	1
Defense Special Weapons Agency	1
Defense Threat Reduction Agency Chemical and Biological Technologies Department	1
Defense Threat Reduction Agency Nuclear Enterprise Directorate	1
Defense Threat Reduction Agency On-Site Inspection Directorate	1
Defense Threat Reduction Agency Operations Directorate	1
Defense Threat Reduction Agency Research and Development Directorate	1
Defense Threat Reduction Agency headquarters	1

How this entity was disambiguated

This entity first appeared as the object of triple T521099 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Defense Threat Reduction Agency
Context triple: [Fort Belvoir, hosts, Defense Threat Reduction Agency]

A. Science and Technology Directorate
The Science and Technology Directorate is the research and development arm of the U.S. Department of Homeland Security, responsible for developing and evaluating technologies to enhance national security and resilience.
B. United States Missile Defense Agency
The United States Missile Defense Agency is a U.S. Department of Defense organization responsible for developing, testing, and deploying integrated missile defense systems to protect the United States and its allies from ballistic missile threats.
C. Office of Weapons and Counterproliferation
The Office of Weapons and Counterproliferation is a specialized unit focused on analyzing, monitoring, and helping to prevent the spread of weapons and related technologies.
D. Defense Intelligence Agency
The Defense Intelligence Agency is a U.S. Department of Defense combat support agency responsible for producing and managing foreign military intelligence to support national security and military operations.
E. National Nuclear Security Administration
The National Nuclear Security Administration is a U.S. government agency responsible for enhancing national security through the military application, safety, and security of nuclear science and technology.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Defense Threat Reduction Agency
Target entity description: The Defense Threat Reduction Agency is a U.S. Department of Defense organization responsible for safeguarding the United States and its allies from weapons of mass destruction and emerging threats.

A. Science and Technology Directorate
The Science and Technology Directorate is the research and development arm of the U.S. Department of Homeland Security, responsible for developing and evaluating technologies to enhance national security and resilience.
B. United States Missile Defense Agency
The United States Missile Defense Agency is a U.S. Department of Defense organization responsible for developing, testing, and deploying integrated missile defense systems to protect the United States and its allies from ballistic missile threats.
C. Office of Weapons and Counterproliferation
The Office of Weapons and Counterproliferation is a specialized unit focused on analyzing, monitoring, and helping to prevent the spread of weapons and related technologies.
D. Defense Intelligence Agency
The Defense Intelligence Agency is a U.S. Department of Defense combat support agency responsible for producing and managing foreign military intelligence to support national security and military operations.
E. National Nuclear Security Administration
The National Nuclear Security Administration is a U.S. government agency responsible for enhancing national security through the military application, safety, and security of nuclear science and technology.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	U.S. Department of Defense agency ⓘ United States defense agency ⓘ
abbreviation	Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: DTRA
appliesToJurisdiction	U.S. allies ⓘ United States of America ⓘ surface form: United States
country	United States of America ⓘ surface form: United States
employs	civilian personnel ⓘ military personnel ⓘ
fieldOfWork	arms control verification ⓘ biological weapons ⓘ chemical and biological defense ⓘ chemical weapons ⓘ counterproliferation ⓘ nonproliferation ⓘ nuclear security ⓘ nuclear weapons ⓘ radiological weapons ⓘ threat reduction ⓘ weapons of mass destruction ⓘ
formedByMergerOf	Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Nuclear Agency Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Special Weapons Agency Defense Technology Security Administration ⓘ On-Site Inspection Agency ⓘ
hasPart	Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Threat Reduction Agency Chemical and Biological Technologies Department Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Threat Reduction Agency Nuclear Enterprise Directorate Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Threat Reduction Agency On-Site Inspection Directorate Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Threat Reduction Agency Operations Directorate Defense Threat Reduction Agency self-linksurface differs ⓘ surface form: Defense Threat Reduction Agency Research and Development Directorate
headquartersLocation	Fort Belvoir ⓘ surface form: Fort Belvoir, Virginia United States of America ⓘ surface form: United States Virginia ⓘ
inception	1998 ⓘ
jurisdiction	Department of Defense ⓘ surface form: United States Department of Defense
locatedInTheAdministrativeTerritorialEntity	Fairfax County, Virginia ⓘ
mission	counter emerging threats ⓘ enable the Department of Defense and the U.S. government to prepare for and respond to WMD threats ⓘ safeguard the United States and its allies from weapons of mass destruction ⓘ
operatesInSector	defense ⓘ homeland security ⓘ national security ⓘ
parentOrganization	Department of Defense ⓘ surface form: United States Department of Defense
performsFunction	WMD consequence management planning ⓘ WMD threat assessment ⓘ arms control treaty inspection ⓘ arms control treaty monitoring ⓘ nuclear test monitoring support ⓘ support to combatant commands on WMD issues ⓘ
replaces	Defense Special Weapons Agency ⓘ surface form: Defense Nuclear Agency Defense Special Weapons Agency ⓘ On-Site Inspection Agency ⓘ
website	https://www.dtra.mil/ ⓘ

How these facts were elicited

Referenced by (22)

Full triples — surface form annotated when it differs from this entity's canonical label.

Fort Belvoir → hosts → Defense Threat Reduction Agency ⓘ

Defense Agencies → include → Defense Threat Reduction Agency ⓘ

DoD Field Activities → includes → Defense Threat Reduction Agency ⓘ

U.S. Chemical Demilitarization Program → oversightBy → Defense Threat Reduction Agency ⓘ

Defense Threat Reduction Agency → abbreviation → Defense Threat Reduction Agency self-linksurface differs ⓘ

this entity surface form: DTRA

Defense Threat Reduction Agency → formedByMergerOf → Defense Threat Reduction Agency self-linksurface differs ⓘ

this entity surface form: Defense Special Weapons Agency

Defense Threat Reduction Agency → formedByMergerOf → Defense Threat Reduction Agency self-linksurface differs ⓘ

this entity surface form: Defense Nuclear Agency