This excerpt taken from the STT 8-K filed Jan 25, 2008.
have securities rated in one of the three highest rating categories by a nationally recognized statistical rating system.
(b) There shall at all times be one or more Administrative Trustees hereunder with respect to the Trust Securities. Each Administrative Trustee shall be either a natural person who is at least 21 years of age or a legal entity that shall act through one or more persons authorized to bind that entity.
(c) There shall at all times be a Delaware Trustee. The Delaware Trustee shall either be (i) a natural person who is at least 21 years of age and a resident of the State of Delaware, or (ii) a legal entity with its principal place of business in the State of Delaware and that otherwise meets the requirements of applicable Delaware law and that shall act through one or more persons authorized to bind such entity.
SECTION 8.8. Conflicting Interests. (a) If the Property Trustee has or shall acquire a conflicting interest within the meaning of the Trust Indenture Act, the Property Trustee shall either eliminate such interest or resign, to the extent and in the manner provided by, and subject to the provisions of, the Trust Indenture Act and this Trust Agreement.