NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed the following Yuma, AZ (the city) improvement bonds and city Municipal Property Corporation (MPC) excise tax revenue bonds: --$2.2 million improvement district no. 68 improvement bonds, at 'A+'; --$23.7 million municipal facilities revenue bonds, series 2007B at 'AA-'; --$47.1 million municipal facilities revenue bonds, series 2007D at 'AA-'; --$25.5 million municipal facilities revenue bonds, series 2010B at 'AA-'. In addition, Fitch affirm