Internal Audit Dept structure

Good morning,I am needing information regarding the structure of other credit union internal audit departments.  Interested in: 1) Asset size of credit union 2) Organizational chart of IA department (or job titles of IA members and who IA reports to administratively) 3) Does IA have a lead person?  If so, title of department leader (manager, VP, Director, etc.)Thank you,Mark Jenkins, Internal AuditorKnoxville TVA Employees Credit Union[email protected]