Standard&Poor's Ratings Services has raised its rating on the Greater Orlando Aviation Authority (GOAA), Fla.'s bonds to 'AA-' from 'A+'. At the same time, Standard&Poor's assigned its 'AA-' rating to the authority's series 2015A senior airport revenue bonds. The outlook is stable. The GOAA is issuing the debt for Orlando International Airport (MCO). The upgrade reflects our view of improved debt service coverage (DSC), which we expect MCO to maintain over the next five years. In our opinion, key credit strengths include the following: A large origin and destination (O&D) base (about 95% of the airport's total); An expanding service area that has a very strong tourist industry anchored by several major theme parks; Retention of