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FINAL
 Leasehold
Security Agreement (A1)
   NVG Network I Statutory Trust,
  Tennessee Valley Authority,
 
 Lease
of Control, Monitoring  and Data Analysis Network




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TABLE OF CONTENTS
 PageARTICLE I         INCORPORATION OF RECITALS; DEFINITIONS
    
    
    2ARTICLE II        SECURITY AGREEMENT
    
    
    2ARTICLE III       SECURITY AGREEMENT EVENTS OF DEFAULT
    
    
    3ARTICLE IV       REMEDIES
    
    
    3Section 4.01
    
    Rights of the Secured Party
    
    
    3Section 4.02
    
    The Debtors Rights
    
    
    4Section 4.03
    
    Delay or Omission Not a Waiver
    
    
    4Section 4.04
    
    Restoration of Rights and Remedies
    
    
    4Section 4.05
    
    Attorney-in-Fact
    
    
    4Section 4.06
    
    Filings
    
    
    5Section 4.07
    
    Early Termination
    
    
    5Section 4.08
    
    The Secured Partys Duties
    
    
    5ARTICLE V       MISCELLANEOUS
    
    
    5Section 5.01
    
    Amendments and Waivers
    
    
    5Section 5.02
    
    Notices
    
    
    5Section 5.03
    
    Survival
    
    
    5Section 5.04
    
    Successors and Assigns
    
    
    6Section 5.05
    
    Business Day
    
    
    6Section 5.06
    
    Governing Law
    
    
    6Section 5.07
    
    Severability
    
    
    6Section 5.08
    
    Counterparts
    
    
    6Section 5.09
    
    Headings and Table of Contents
    
    
    6Section 5.10
    
    Further Assurance
    
    
    6Section 5.11
    
    Effectiveness
    
    
    6Section 5.12
    
    Release
    
    
    6Section 5.13
    
    Subordination
    
    
    7Section 5.14
    
    Limitation of Liability
    
    
    7AttachmentsAttachment A      Description of the Network
 -i-




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LEASEHOLD SECURITY AGREEMENT (A1)
 LEASEHOLD SECURITY AGREEMENT (A1) Security
Agreement NVG NETWORK I STATUTORY TRUST Debtor Owner Lessor TENNESSEE VALLEY
AUTHORITY, Secured Party
 WHEREAS, Participation Agreement
 WHEREAS,
 WHEREAS,
 WHEREAS,
 WHEREAS,
 WHEREAS
 WHEREAS,
 NOW, THEREFORE,
 GRANTING CLAUSE




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Secured Obligations Collateral
     ARTICLE I
 INCORPORATION OF RECITALS; DEFINITIONS
  ARTICLE II
 SECURITY AGREEMENT
  2




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ARTICLE III
 SECURITY AGREEMENT EVENTS OF DEFAULT
 Security Agreement Event of Default
   ARTICLE IV
 REMEDIES
 Section 4.01 Rights of the Secured Party.
  3




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provided
  Section 4.02 The Debtors Rights.
 Section 4.03 Delay or Omission Not a Waiver.
 Section 4.04 Restoration of Rights and Remedies.
 Section 4.05 Attorney-in-Fact.
 4




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Section 4.06 Filings.
 Section 4.07 Early Termination.
 Section 4.08 The Secured Partys Duties.
 ARTICLE V
 MISCELLANEOUS
 Section 5.01 Amendments and Waivers.
 Section 5.02 Notices.
 Section 5.03 Survival.
 5




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Section 5.04 Successors and Assigns.
   Section 5.05 Business Day. (provided
 Section 5.06 Governing Law.
 Section 5.07 Severability.
 Section 5.08 Counterparts.
 Section 5.09 Headings and Table of Contents.
 Section 5.10 Further Assurance.
 Section 5.11 Effectiveness.
 Section 5.12 Release.
 6




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Section 5.13 Subordination.
 Section 5.14 Limitation of Liability.
 7




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IN WITNESS WHEREOF,
 NVG NETWORK I STATUTORY TRUST,as
DebtorBy:
    
    Wells Fargo Delaware Trust Company,not in its individual capacity but solely asOwner Trustee under the Trust AgreementBy:
    
    /s/ Ann Roberts DukartName: Ann Roberts DukartTitle: Vice PresidentDate: SEP 24 2003




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TENNESSEE VALLEY AUTHORITY,asSecured PartyBy:
    
    /s/ John M. HoskinsName: John M. HoskinsTitle:Senior Vice President and TreasurerDate:




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CONTROL, MONITORING AND DATA ANALYSIS NETWORK
LEASEHOLD SECURITY AGREEMENTS