I found this list of freqs of DOE "Nest" Teams. If you are in Clark county please give these a try and report findings if any.
NV206 DOE NEST Teams 164.275, 167.850, 168.450, 171.200, 171.950, 173.000
NV206 DOE NEST Teams 164.275, 167.850, 168.450, 171.200, 171.950, 173.000