MetroFoucs: July 18, 2017

Three alleged members of the deadly MS-13 gang taken off the street, charged with 4 murders that have crippled a Long Island community. Our crippled infrastructure affecting not only our rails but our water! Find out how big this little known problem really is. FRONTLINE gives us a first person perspective of life on parole. And our “Summer of Adventure” continues with a “Weekend in Havana.”