Terminal Run

The motion came before the sound. The water divided, driven by the force of something immense, an object, a rounded elliptical bullet that had soared quietly into the seawater and pushed the water aside as it silently and swiftly came into being. The thing continued, no longer an elliptical starting point but now a giant cylinder, fins protruding on either side, but still perfectly cylindrical, and now a slight rushing noise of its passage could be heard. The skin of the object was not rigid but sharklike.

The machine had no movements inside, no life, not even any light, just the silent hum of rotating machinery and pumped fluids. A trillion corridors carved in silicon admitted the rush of electrons at the speed of light. A cubic meter of human brain tissue immersed in cranial fluid listened and watched and smelled the data surrounding it. It watched the narrowband and broadband sonar arrays that reached out to the infinite reaches of the sea to hear the noises of manmade machinery. It watched the acoustic daylight imaging arrays that searched for close and distant contacts, using the ambient noise of the ocean as a sort of light. The disturbances in the ambient noise field were akin to the variations of a light field caused by an object, sensed not by an eyeball’s retina but by a flat electronic sensor wrapped around the girth of the moving object in the sea. The thing moved on, its computers and processors and brain tissue monitoring the outside and the inside of itself. One portion of the tissue’s action was to record a narrative of what was happening into a hardened sector of a computer called a history module for later use by the humans who had created the object. The stream of conscious thought might be considered the organism’s thoughts as it moved through the sea, but the creators called it something different: the Command and Control Deck Log, or the command log for short. It was this portion of the brain tissue that was most active at the moment as the metal object searched for another object.