DUI Saturation Patrol – 9th (Deering) District 23 Mar 2017 The Chicago Police Department will be conducting a DUI Saturation Patrol in the 9th (Deering) District this weekend. The DUI Saturation Patrol will commence at 6 p.m. on Saturday, March 25, 2017 and end at 2 a.m. on Sunday, March 26, 2017. For more information, click here.