DUI Saturation Patrol – 9th (Deering) District 27 Apr 2017 The Chicago Police Department will be conducting a DUI Saturation Patrol in the Deering (9th) District this weekend. The DUI Saturation Patrol will commence at 7 p.m. on Friday, April 28, 2017 and end at 3 a.m. on Saturday, April 29, 2017. For more information, click here.