It is from LandAir so I wouldn’t count on being able to listen to it. Interesting though because equipping all the volunteers with NXDN radios would be pretty expensive. Most things on LandAir are encrypted so I would expect that to be the case with the far department too. A real mixed bag for interop: Cocke, Jefferson, and Sevier are all UHF NXDN. Greene is 7/800 P25 Phase II and Hamblen is switching to 7/800 TACN.
With all that being said about encryption I have been fooled before. Time will tell.