and to add to this...
Identification of Business users can take time, my experience has been folks want it and want it now. Tracking down business users can take Minutes, Hours, Days, Weeks, Months or even the elusive ones Years and Years to finally get the snippet of communication to make an Identification
Business Users can
a. Be on a shared Frequency - now try and ID them
b. Be on a Rented Frequency from a Radio shop - now try and ID them
c. Be Encrypted [even part time] - see a & b
d. might not even be licensed - find them
e. might have an expired license
f. FRS / GMRS
We can go on, but it will give folks thoughts to process and learn.
What Bill said. The listeners are the experts.