It's a term that's casually thrown around in movies and novels. But what does "DEFCON" mean, and what's the significance of each of its five levels?

There was an international economic emergency in 2008 called the global financial crisis. World trade collapsed, almost as if ...

The XF8B was envisioned to provide the U.S. Navy with a long-range carrier-borne fighter that could take the fight to the Japanese mainland. When it comes to military aircraft manufacturing, Boeing is ...