Robertson Fuel Systems, L.L.C., Tempe, Ariz., is being awarded a $16,754,932 modification to a previously awarded firm-fixed price indefinite-delivery/indefinite-quantity contract (N00019-08-D-0009) for the procurement of 24 mission auxiliary fuel tank systems and related hardware for the V-22 aircraft. Work will be performed in Tempe, Ariz., and is expected to be completed in December 2012. Contract funds in the amount of $16,754,932 will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.