EntityQ373338· pop 25· linked from 194 articlescritical infrastructureSign in to saveinfrastructure important to national securityConnectionstransportEntitytelecommunicationsEntitypipelineEntityUnited NationsEntitywaterEntityMediterranean SeaEntityeducationEntityoceanEntityarchitectureEntityIndian OceanEntityearthquakeEntityagricultureEntityMiddle EastConceptenergyEntitygovernmentEntitybridgeEntityRed SeaEntitytsunamiEntitytaxEntityfloodEntityCategoriesInfrastructureNational securityUnited States Department of Homeland Security