Rolls Royce Corp., Indianapolis, Ind., is being awarded a $22,204,421 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) to exercise an option to procure CV-22 engine support in the form of 17,800 engine flight hour and 17 low power repairs.  Work will be performed in Oakland, Calif. (70 percent) and Indianapolis, Ind. (30 percent), and is expected to be completed in November 2011.  Contract funds in the amount of $22,204,421 will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.