DALLAS (Standard&Poor's) July 19, 2012--Standard&Poor's Ratings Services assigned its 'AA' rating to the Nashville&Davidson County Metropolitan Government (Metro), Tenn.'s series 2012A district energy system revenue and tax refunding bonds, series 2012B general obligation (GO) refunding bonds, and series 2012 GO improvement bonds (Qualified Energy Conservation Bonds - Direct Payment). At the same time, we affirmed our 'AA' long-term and underlying ratings (SPUR) on Metro's GO debt outstanding. The outlook on all ratings is stable. "Despite operating pressures from the Metro's health authority and those associated with retirement and postemployment benefits, the government's financial performance and position remain good in our view," said Standard&Poor's credit analyst Sarah Smaardyk. The metropolitan government's full faith