Nuclear-powered submarines use some of the most advanced military technology in the world. These are the ones that are a cut ...

The Swedish military deployed fighter jets and a warship to shadow a Russian submarine after it entered the Baltic Sea on ...

A new hunter is lurking in the deep — and it's made of metal, silicon, and lots and lots of artificial intelligence. The Defense Advanced Research Projects Agency (DARPA) officially launched its ...

The "XXLUVs" can likely be loaded with significantly larger payloads than the U.S. Navy's Orca, which is also undergoing testing.