NEW YORK--(BUSINESS WIRE)--Fitch Ratings has downgraded Ft. Huachuca/Yuma Proving Ground Communities II, LLC, AZ's taxable military housing revenue bonds, series 2009 (the bonds) to 'A' from 'AA-'. Fitch has also removed the bonds from Rating Watch Negative and assigned a Negative Outlook. SECURITY The bonds are special limited obligations of the issuer and are secured by a first lien on all receipts of the project, the majority of which comes from the basic allowance for housing (BAH). BAH is