Can anyone explain Tacoma pd's officer call signs. Specifically what the letters, numbers, etc. mean in terms of the sector location, beat location, shift number etc. I know that there are 4 sectors, 2 north 2 south but thats about it. I'm trying to figure out the call signs used in Tacoma as well as I know Seattle's eg. 1SAM1 = 1st shift, sam sector, beat one. I've had no luck researching this. thanks