GM   The Greenbank was a wreck of crumbling buildings and old railroads. More than a few of Freedom Cities homeless lived here. Many ill, in body and mind. Many lonely, many desperate. Young and old, men and women, and every race of earth. Possibly, even races other than earth. This was Freedom City, after all.    The Mission of Mercy was a charitable mobile medical unit, run by volunteers, to try and give at least basic medical care to the homeless, some who were extremely ill. Run by a nun