The Air Force has awarded Northrop Grumman a potential $450 million deal to modernize the Defense Department's inventory of mobile air-defense threat simulators to prepare pilots -- including operators of the fledgling F-35 Joint Strike Fighter fleet -- to recognize and counter advanced enemy missile and artillery threats. On Dec. 6, the Air Force Life Cycle Management Center at Hill Air Force Base, UT, awarded Northrop Grumman Amherst Systems, Buffalo, NY, an indefinite-delivery/indefinite-quantity contract for the Joint Threat Emitter program...