The Air Force is modifying a fixed price incentive firm contract not to exceed $324,600,000 with Northrop Grumman Systems Corporation, Integrated Systems Air Combat Systems of San Diego, Calif.>> This contract will provide 2 RQ-4B Block 301 Global Hawk air vehicles, 3 RQ-4B Block 40 air vehicles with MP-RTIP sensor, 1 mission element, 1 launch and recovery element, and associated equipment; option for 4 EISS sensor payloads.>> At this time $180,351,181 has been obligated.>> 303 AESG/PK, Wright-Patterson AFB, Ohio, is the contracting activity (FA8620-07-C-4015 P00008).>> -ends->