I don't know if you caught the patrol assignments, but Troop 3 had up to S-13, M-6, N-6 and heard S-19, M-8, N-8, and these are new. Probably new Tollway patrol numbers, but will take some additional listening to confirm.I think you're on to something about the Dist. 15 units Heard the former 15-175 (RID 15175/16175) go 10-41 as "3-249" on Troop 3 Southwest and say that his "portable still has a District 15 ID"