Kevin McCorry reports that the Philadelphia School District has potential buyers for 4 recently closed school buildings. Tom MacDonald has the story on the latest arrests in Philadelphia’s witness intimidation crackdown. Dave Heller talks with longtime labor leader Thomas Paine Cronin about the art of union negotiations. Holly Otterbein investigates the effect Philadelphia’s public housing shortage is having on victims of domestic abuse. Emma Jacobs meets day laborers at an impromptu marketplace in northeast Philadelphia.