The Defense of Procyon IIIProcyon is a star 11 light years from Earth, visible in our skies as the brightest star in the Canis Minor constellation. Since the system contains the remains of a collapsed star it was bound to be rich in heavy elements, ripe for industrialization. It was thus no surprise, that in 2104 this was one of the first extrasolar systems to be colonized. The surprise came 3 years later, when an ancient artefact belonging to a clearly alien civilization was