Lockheed Martin Corp. has opened a new lab focused on hypersonic weapons in Alabama, as the US struggles to catch up with China and Russia in deploying the advanced technology. The major defense ...

Editor’s note: “Behind the News” is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT.

Experts warn that resumption of full nuclear weapons tests is unnecessary and would undermine the United States' efforts to discourage other nations from testing their own nukes. (Tech. Sgt. Draeke ...