Metro PD is on their own Phase 2 system (BCD436HP, TRX 1)
Nevada Highway Patrol is on NSRS which is an analog EDACS system
The fire departments are on SNACC which is Phase 1 (BCD396XT)
You don't have to program in all the sites on SNACC, within Vegas city limits, including Henderson, the primary towers are Angel, Apex, Potosi, Simulcast, Sloan, and Sunrise.
The same goes for NSRS, you only have to program Angel, Apex, Potosi, Hotel Rio, Simulcast, Sloan, and Sunrise.