Rolls-Royce Corp., Indianapolis, Ind., is being awarded a $20,341,169 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) to exercise an option for maintenance services in support of the MV-22 and CV-22 AE1107C engines, including low power repairs and program management and site support. Work will be performed in Oakland, Calif. (70 percent). and Indianapolis, Ind. (30 percent), and is expected to be completed in November 2013. Contract funds in the amount of $20,341,169 will expire at the end of the current fiscal year. This contract combines purchases for the Air Force ($9,419,451; 46.3 percent); Navy ($9,136,302; 45 percent); and Special Operations Command ($1,785,416; 8.7 percent). The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.