The Issuer hereby covenants and agrees, except for releases specifically permitted hereunder, not to sell, assign (by operation of law or otherwise) or otherwise dispose of, or create or suffer to exist, any Adverse Claim (other than the Security Interest created hereby or any Permitted Liens) upon or with respect to, any Participation Certificate or Trust Property, or any interest in either thereof, or upon or with respect to any Trust Account, or assign any right to receive income in respect thereof.  The Issuer shall promptly, but in no event later than two (2) Business Days after a Responsible Officer has obtained actual knowledge thereof, notify the Indenture Trustee of the existence of any Adverse Claim on any Participation Certificate or Trust Estate, and the Issuer shall defend the right, title and interest of each of the Issuer and the Indenture Trustee in, to and under the Participation Certificates and Trust Estate, against all claims of third parties.