Cityscape: NYPD Green

Luke Waters was born in Ireland and had dreams of following in his grandfather's and brother's footsteps by joining that country's police force.  Waters did fulfill his dream of becoming a cop -- only in New York City.  He spent two decades with the NYPD.  Waters details his experiences in a new memoir called NYPD Green: An Irish-Born Detective's Twenty Years on the Mean Streets of New York.  He joins us on this week's Cityscape to share his story.