To hear them on the MSWIN TRS, you will firstly need an scanner capable of 700 MHz P25 Trunking. Then you will need to program in the MSWIN sites nearest to you from the Database here: Mississippi Wireless Integrated Network (MSWIN) Trunking System, Jackson, Mississippi - Scanner Frequencies
You will then need to find the TG's they are using.
You will then need to find the TG's they are using.