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Emergency communication systems (Hhgec)

Safety and security (H)
    Hazards and emergency operations (Hh)
         Use For: Emergency services
        Disasters and emergency operations (Hhg)
            Emergencies (Hhge)
                 Related Term (Associative): Crashes (Hb)
                Emergency communication systems (Hhgec)
                     Use For: Emergency reporting systems
                     Related Term (Associative): Emergency transportation (Afs); Automatic crash notification (Dsfpcb)
                Emergency management (Hhgem)
                     Use For: Rapid response (Emergencies)
                     Related Term (Associative): Incident management (Dcmthcj)