In 2021 I did a quick trip from Joplin and found a very busy system, lots of talkgroups, all clear.
BUT several frequencies used/heard were not on that current license:
from 2021:
Not licensed 451.5875
Not licensed 451.7375
Not licensed 451.9375
On WRNV418 452.1375
On WRNV418 452.1625
On WRNV418 452.2125
On WRNV418 452.2625
On WRNV418 452.6875
Doubt these freqs will be reused, but worth checking other UHF freqs to hear it all.