Five people were rushed to area trauma centers after a shooting aboard a Metro train on its way to the Willowbrook/Rosa Parks Station, authorities said Saturday... ...The shooting was reported at about 7:40 p.m. Friday. An argument broke out as the eastbound C (Green) Line train left the Avalon Station in South Los Angeles, a passenger told ABC7, and the shooting occurred before the train reached the Willowbrook/Rosa Parks Station. "There was a big argument and I saw the gun come out and he started firing into a bunch of people," witness Andrew Maynard told Fox11. "He started shooting again....