NEW YORK - Standard & Poor's Ratings Services said it has raised its long-term rating on Oklahoma City Airport Trust's bonds, supported by the U.S. Bureau of Prisons, to A-minus from BBB, reflecting a long history of lease payments and the strong essentiality of the project. The outlook is stable.

"Under our criteria, the rating is limited to the current rating level due to the right of the lessee, the federal Bureau of Prisons, to terminate the lease for convenience with minimal compensation to the airport," said Standard & Poor's credit analyst Edward McGlade.

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