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About: Terror alert system     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatAlertMeasurementSystems, within Data Space : dbpedia.org associated with source document(s)

Type: placeyago:Artifact100021939yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930yago:System104377057yago:Whole100003553yago:WikicatAlertMeasurementSystems New Facet based on Instances of this Class

Terror alert systems are standardised emergency population warning systems for describing and disseminating information about terrorism-related threats. They became more popular after the September 11 attacks on the United States in 2001.