The United Neighborhood Organization, also known as UNO, is fighting with the charter school chain it founded, and thing are getting ugly. In a letter today, UNO CEO Rick Cerda said the Charter School Network owes nearly three million dollars in back payments. UNO is threatening to sell the buildings of six schools if no payment is made. Dan Mihalopoulos is covering the story for the Chicago Sun-Times and he’s joining us now on the phone.