I noticed yesterday that most of the regular OPS04 traffic was taking place on TAC01, and not OPS04. Then today at 6'ish PM when they were doing a shift change I heard the dispatcher ask all regular Elgin County patrol officers to switch to TAC01 and carry on there duties from there, while the 'scene' guys are on OPS04. Any idea why this would be? The only thing I can think of is that some of the big wigs down from Toronto/Orillia way have the OPS channels in their radios, but not the TAC channels. I assumed things would be the other way around, with the investigation on a TAC channel.