FARNBOROUGH, ENGLAND -- Lockheed Martin's super-secret advanced systems development shop is developing futuristic technology that could one day outfit the fifth-generation F-22A Raptor and F-35 Lightning II fighters. With technology maturation and prototyping efforts under way on the technology, company officials also are working to define what the requirements will be for a sixth-generation fighter aircraft, Rob Weiss, the company's vice president for business development for aeronautics, said during a briefing this morning. Among the technology areas the company's Skunk...