The F-47 is emerging as the most closely guarded project in American airpower, a sixth-generation fighter conceived to dominate the skies long after today’s jets age out. Built around extreme stealth, ...

A tiny Pentagon office had spent months investigating conspiracy theories about secret Washington UFO programs when it uncovered a shocking truth: At least one of those theories had been fueled by the ...

Governments kept advanced military weapons secret for decades to maintain strategic advantages over rivals, with technologies like stealth aircraft, hypersonic systems, and nuclear weapons eventually ...