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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MISSION OF THE TRIBAL-ISAC IS TO IMPROVE THE OVERALL SECURITY POSTURE OF TRIBES WITH AN EMPHASIS ON CYBER SECURITY, BUT INCLUDING ALL-HAZARD THREATS AND RISKS. COLLABORATION AND INFORMATION SHARING AMONG MEMBERS, WITH TRUSTED MANAGED SHARING BETWEEN OTHER INDUSTRY ISACS, THE U.S. DEPARTMENT OF HOMELAND SECURITY (DHS) AND PRIVATE SECTOR PARTNERS ARE THE KEYS TO SUCCESS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>TRIBES ENCOMPASS A WIDE RANGE OF OPERATIONS THAT OFTEN INCLUDE SERVICES FOR GOVERNMENT, TRIBAL MEMBERSHIP, HEALTH AND SOCIAL SERVICES, EDUCATION, HOUSING, ENERGY, COMMUNICATIONS, FOOD AND AGRICULTURE, LAND MANAGEMENT AND A WIDE ARRAY OF ENTERPRISES INCLUDING A LARGE PRESENCE IN GAMING &amp; HOSPITALITY. THE TRIBAL-ISAC PROVIDES A CENTRAL RESOURCE FOR GATHERING INFORMATION ON CYBER THREATS TO CRITICAL INFRASTRUCTURE AND TWO-WAY SECURE AND TRUSTED SHARING OF INFORMATION BETWEEN THE NATIONS TRIBES IN ORDER TO IDENTIFY, PROTECT, DETECT, RESPOND AND RECOVER FROM ATTACKS ON PUBLIC AND PRIVATE CRITICAL INFRASTRUCTURE. THE TRIBAL-ISAC PROVIDES SECURITY INFORMATION ALONG WITH EDUCATION AND OUTREACH AIMED AT REDUCING RISK TO THE NATIONS TRIBES CYBER AND PHYSICAL INFRASTRUCTURE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS OF IS RESPONSIBLE FOR REVIEWING AND APPROVING THE ANNUAL FORM 990 BEFORE IT IS FILED WITH THE IRS. THE EXECUTIVE DIRECTOR WILL COORDINATE WITH THE FINANCE COMMITTEE TO PREPARE THE DRAFT FORM, WHICH WILL BE REVIEWED BY THE BOARD AT A SCHEDULED MEETING. THE BOARD MUST APPROVE THE FINAL VERSION BY MAJORITY VOTE BEFORE SUBMISSION. FORM 990 WILL BE PROVIDED UPON REQUEST, IN ACCORDANCE WITH TRANSPARENCY REQUIREMENTS. THE FORM WILL BE FILED BY THE IRS DEADLINE OR EXTENDED IF NECESSARY, AND THE ORGANIZATION WILL RETAIN A COPY FOR AT LEAST SEVEN YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AN ANNUAL REPORT IS PUBLISHED ON THE WEBSITE WHICH LISTES ACCOMPLISHMENTS, NEXT YEAR GOALS, AND A YEAR-END FINANCIAL SUMMARY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>