Homeland Security Advisory System
E154917
The Homeland Security Advisory System was a color-coded alert system used by the U.S. government from 2002 to 2011 to communicate the risk of terrorist attacks to the public and authorities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Homeland Security Advisory System canonical | 8 |
How this entity was disambiguated
This entity first appeared as the object of triple T1349443 — 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: Homeland Security Advisory System Context triple: [National Terrorism Advisory System, replaced, Homeland Security Advisory System]
-
A.
National Terrorism Advisory System
The National Terrorism Advisory System is the United States’ official public warning framework that communicates current terrorism threats and recommended protective actions to government agencies, organizations, and the general public.
-
B.
National Infrastructure Protection Plan
The National Infrastructure Protection Plan is a U.S. strategic framework that coordinates government and private-sector efforts to safeguard and enhance the resilience of the nation’s critical infrastructure and key resources.
-
C.
Homeland Security Grant Program
The Homeland Security Grant Program is a federal funding initiative that supports state, local, tribal, and territorial efforts to prevent, protect against, mitigate, respond to, and recover from acts of terrorism and other threats.
-
D.
Homeland Security Act of 2002
The Homeland Security Act of 2002 is a U.S. federal law that reorganized and consolidated numerous government agencies to create the Department of Homeland Security in response to the September 11, 2001 terrorist attacks.
-
E.
Regional Security System
The Regional Security System is a Caribbean collective defense organization comprising several Eastern Caribbean states that coordinates regional security, law enforcement, and military cooperation.
- 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: Homeland Security Advisory System Target entity description: The Homeland Security Advisory System was a color-coded alert system used by the U.S. government from 2002 to 2011 to communicate the risk of terrorist attacks to the public and authorities.
-
A.
National Terrorism Advisory System
The National Terrorism Advisory System is the United States’ official public warning framework that communicates current terrorism threats and recommended protective actions to government agencies, organizations, and the general public.
-
B.
National Infrastructure Protection Plan
The National Infrastructure Protection Plan is a U.S. strategic framework that coordinates government and private-sector efforts to safeguard and enhance the resilience of the nation’s critical infrastructure and key resources.
-
C.
Homeland Security Grant Program
The Homeland Security Grant Program is a federal funding initiative that supports state, local, tribal, and territorial efforts to prevent, protect against, mitigate, respond to, and recover from acts of terrorism and other threats.
-
D.
Homeland Security Act of 2002
The Homeland Security Act of 2002 is a U.S. federal law that reorganized and consolidated numerous government agencies to create the Department of Homeland Security in response to the September 11, 2001 terrorist attacks.
-
E.
Regional Security System
The Regional Security System is a Caribbean collective defense organization comprising several Eastern Caribbean states that coordinates regional security, law enforcement, and military cooperation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
United States government program
ⓘ
terrorism alert system ⓘ |
| abbreviation | HSAS ⓘ |
| administeredBy |
Department of Homeland Security
ⓘ
Office of Homeland Security ⓘ |
| announcedBy | Tom Ridge ⓘ |
| appliesTo |
federal agencies
ⓘ
general public ⓘ local governments ⓘ state governments ⓘ |
| colorForElevated | Yellow ⓘ |
| colorForGuarded | Blue ⓘ |
| colorForHigh | Orange ⓘ |
| colorForLow | Green ⓘ |
| colorForSevere | Red ⓘ |
| communicationMethod |
government websites
ⓘ
media briefings ⓘ public announcements ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| criticizedFor |
being too vague
ⓘ
potentially causing unnecessary public anxiety ⓘ rarely changing threat levels ⓘ |
| developedInResponseTo | September 11 attacks ⓘ |
| endDate | 2011-04-26 ⓘ |
| field |
counterterrorism
ⓘ
homeland security ⓘ |
| governedBy |
United States federal government
ⓘ
linked to:
United States government
|
| hasThreatLevel |
Elevated
ⓘ
Guarded ⓘ High ⓘ Low ⓘ Severe ⓘ |
| introducedBy |
George W. Bush administration
ⓘ
linked to:
Bush administration
|
| language | English ⓘ |
| legalBasis | Homeland Security Presidential Directive-3 ⓘ |
| operatedBy | United States Department of Homeland Security ⓘ |
| purpose |
communicate risk of terrorist attacks
ⓘ
guide government and law enforcement security measures ⓘ inform public about terrorism threat levels ⓘ |
| replacedBy | National Terrorism Advisory System ⓘ |
| replacedInPracticeBy |
National Terrorism Advisory System public alerts
ⓘ
linked to:
National Terrorism Advisory System
|
| scope | national ⓘ |
| startDate | 2002-03-12 ⓘ |
| status | defunct ⓘ |
| usedDuring |
War on Terror
ⓘ
linked to:
Global War on Terrorism
|
| uses | color-coded threat levels ⓘ |
| yearEnded | 2011 ⓘ |
| yearIntroduced | 2002 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Homeland Security Advisory System Description of subject: The Homeland Security Advisory System was a color-coded alert system used by the U.S. government from 2002 to 2011 to communicate the risk of terrorist attacks to the public and authorities.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.