Let me tell you something Bunky, sorting out the FBI requires patience, a LOT of patience. Before the internet a couple of friends and I spent years logging transmissions on the 167MHz band and sorting out the who's who of it all. Finding the frequencies is only half the battle, figuring out the channel codes, substation designators and unit identifiers is the other half. Now you have "instant" shared information on frequencies but still with the other stuff you're on your own.
I don't know if they use nicknames anymore like they did in the 70s and 80s, pretty cute some of them. Being a kid with some big ones once in a while I'd have a little fun with them on stakeouts. I remember one good laugh when I found where one was hiding and drove past, when I waved and shouted "Hi Rhino!" the look on his face could have stopped a clock.