For now having a county system that offers complete inter-agency interoperability, I'm listening to a sunken boat/search&rescue case today, and it's a debacle. Command is on TAC18, MedFlight is on "LZ EAST," DCSO is trying to call MedFlight in EMS DISP, units are calling command on FIRE NORTH, and MedFlight cannot converse with USCG because they don't have the VHF marine frequencies preset into their set. Quite a mess. By the way, the talk group they are calling LZ EAST is 14618. I'll send a mass update at the end of the week.