Standard&Poor's Ratings Services confirmed its 'AAA/A-1' rating on Mississippi Development Bank's (Harrison County) variable-rate demand refunding bonds series 2008A-1, 2008A-2, and 2008B, due to the bank facility being extended to Oct. 31, 2012. The long-term and short-term components of the rating are based on the rating on the letter of credit provider, Bank of America Merrill Lynch. Criteria: Methodology And Assumptions: Approach To Evaluating Letter Of Credit-Supported Debt, July 6, 2009