Through the heptad’s structure, a programmed series of whirrs and clunks resonated as it docked with a port on the long truss projecting to the side of the Caboose: the heart of the Shipyard, rich in airlocks and anchoring points. Docked at the next port along was a glinting, angular framework: the skeleton of Red Hope, awaiting its final components. It sported four large propellant tanks clustered around a knot of pumps, valves, actuators, and sensors that fed a rocket engine centered below.