This 6th-generation aircraft, now designated the F-47, will be the first stealthy aircraft designed by Boeing and is intended to move far beyond the F-35, into territory where, literally, “no man has gone before.” It will be bereft of any vertical control surfaces and will, according to one person close to the program who spoke to National Security Journal, “Be based on concepts of stealth that go beyond just the shaping of an aircraft fuselage and the techniques we know as the keys to low RCS today,” he said. “I cannot be specific about these newer technologies, which have not...