Two of Columbia’s alumni recently saw a project from their time at Columbia find success—their documentary about Chester Gould, the creator of the Dick Tracy comic strip, was aired on public television.Brothers John and Steve Firak, 2005 and 2006 graduates, respectively, co-directed “Chester Gould: An American Original,” which aired Feb. 22 on WTTW Channel 11.John Firak currently works as a freelance photographer an...