As Lockheed Martin's advanced research and technology arm works with the Air Force to help identify sixth-generation capabilities, the company is also seeking direction on the service's plans for long-term modernization of its fifth-generation fleets. Rob Weiss, executive vice president and general manager at Lockheed Martin Skunk Works, told reporters this week that while the company has a sense for what capabilities the F-35 and F-22 may need in order to remain viable through the end of their service lives,...