The new executive vice president of Lockheed Martin's aeronautics business told reporters today that as the Air Force evaluates the makeup of its tactical aircraft portfolio -- and considers a clean-sheet 4.5-generation fighter to replace the F-16 -- he thinks the three fighter aircraft the company already builds for the service provide a holistic, family-of-systems approach to meet a spectrum of capability needs. "They're proven in combat, they offer complementary capabilities that support not only the low-end fight but the...