Bosch rides again

I just watched the first episode on Ballard, the new sequel to Bosch. The producers had telegraphed that Bosch would pop up on occasion on Ballard so I thought I should mention that the name Harry Bosch was indeed spoken out loud at the end of the Ballard pilot, suggesting we will see Harry at some point. (To be fair, they showed some previews of the rest of the season and those scenes didn't show Bosch so maybe we won't see a lot of him. Or maybe they didn't want to dangle him in front of us too much for fear of making him look like a crutch for Renee Ballard.)
In any case, the pilot was pretty watchable so I'll stay with it even if Bosch doesn't appear very frequently.
I'm still trying to wrap my head around the idea of a police unit that is staffed almost entirely by volunteers, retirees, and interns yet still has powers of arrest. I have no idea if that is realistic and would be curious to know if it is.
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Rhino