The ExternalImpactAssessmentModelType is an abstract type enabling the definition through extension of incident impact assessment models external to STIX.
| Field Name | Type | Description | 
|---|---|---|
| @model_nameoptional | string | 
        
           Specifies the name of the externally defined impact assessment model.  | 
    
| @model_referenceoptional | anyURI | 
        
           Specifies a URL reference for the externally defined impact assessment model.  |