Last month, New York City's Police Commissioner James P. O'Neill retired after almost 37 years on the job. As the NYPD's top cop for the last three years, he oversaw the department's rollback of stop and frisk and a continued decline in crime. WBGO's Bob Hennelly sat down with O'Neill for an exit interview. HENNELLY: So, when you came on the force you come on through Transit what were the atmospherics, what was the city like? That was a long time ago. O’NEILL: I joined the Transit Police on