The callsign for this application is issued now as of the past week...
https://www.radioreference.com/apps/db/?fccCallsign=WRDI964
Radio Service "YE" is for Trunked.
Most of these locations are definitely not existing/normal sites for TACN trunking today, however seems like this can provide some fill coverage for areas all around Rutherford County. One to two frequencies per site not enough for a typical voice trunking site, may be just to start the process to secure some that are available, and will eventually be filled in further? Short Mountain has VHF trunking site today, this would be first 700/800 MHz from that site. The site SE of Murfreesboro looks close to the existing Hoovers Gap site, but not exact same addresses.