After years in dry dock, the nuclear-powered attack submarine USS Cheyenne has sailed again, carrying new fuel, upgraded systems, and a fresh role in the U.S. Navy’s long-term undersea strategy. A landmark refit for a Cold War thoroughbred USS Cheyenne (SSN 773), the last-built boat of the Los Angeles-class, has become the first submarine to

Instead of cranking up the whole central heating system, a portable heater can target the space where you live, work […]

That shift just took a concrete step as US drone specialist Saildrone and defence giant Lockheed Martin agreed to arm long‑range unmanned surface vessels with guided missiles, fusing cheap robotic platforms with weapons usually reserved for crewed warships. A quiet research vessel gets teeth Saildrone is best known for its orange, wind‑ and solar‑powered surface

You open the freezer, trying to slide in a tray of leftovers, and everything is chaos. Half-torn bags of vegetables, […]