What Inhabits Me?

The military ran Pluto Station, manned it, supplied it, armed it, and used it as a base for keeping watch for mythical intruders who might come wandering into the system from the far-off seas of space. There was not a scientist in the station who did not feel deep in his bones that the military could be dispensed with, that they wasted much money and time keeping watch for non-existent pirates from the depths of space.