Heinlein is the primary Lunar colony. Heinlein is a frontier city, and outlaws and contraband are easy to find if you know where to look.
Heinlein was originally established as a starport and mining facility. The moon’s soil proved to contain Helium–3, an isotope particularly suited as fuel for modern fusion reactors. Competition for this mineral was one of the major contributing factors that led to the War.
Haas-Bioroid owns and maintains the Heinlein Grid.