First it was missiles, and now the US Navy can add unmanned drones to the list of things that can be launched from a submerged submarine. The drone, called an XFC UAS-eXperimental, was launched in a standard torpedo tube from the Navys USS Providence using a similar technique to how the Navy deploys Tomahawk cruise missiles. The XFC itself can last for more than six hours on fuel cells, and be launched from something as small as a pickup truck when on land, the Navy says.