The Southern Nevada Area Communications Council, aka the SNACC system here, covers Clark County and about 18 agencies use the same exact radio system which makes for great coverage and excellent inter-agency operability. One example earlier during this event was when the Henderson battalion chief was calling Dispatch just by switching to the CCFD (Clark County FD) talkgroup. One system, and everyone's on it, makes for incredible ease of use.
Just now they released the Henderson units so the overhaul is going well and they pretty much have an entire knockdown but the searching continues.
You can see some of the stuff on this one single system from the RR database page:
http://www.radioreference.com/apps/db/?sid=669
That's not everything, however, as there are over 370 talkgroups on this one system alone. I just have the Police on a secondary system just for that purpose and it's disabled at the moment so I could narrow it down just to the 4 main TAC channels in use and I lock out whatever appears as required to keep it just to those 4.
Most of the traffic happening is on CCFD Zone 3 TAC 6, some traffic on TAC 7, TAC 8 is being used for rehab and food/water supplies, TAC 9 is mostly outside activity (outside the hotel).
The Las Vegas City Police Dept are the bastards of the lot: they refuse to sign on to the SNACC system for whatever stupid reasons they have. They signed a contract with MA/COM a few years back to move to their hardware/system, but nothing has come of it so far. They're still in the VHF range for pretty much all their traffic. It's stupid to have 98% of the entire county on the same radio system with no issues and yet the LVPD just dares to be different. Who knows...