; Determine the case number for this report.
; There may be more than one case associated with a given report.
; If this is the case, all associated case numbers will be returned.
; Input Variables: 'RAA' - zero node of the Rad/Nuc Reports data global
; 'RADA'- ien of the entry in the Rad/Nuc Reports file
; Returns: a single case number or numerous case numbers