WT Leaks posted a list of every US hall by state. There were over 200 listed for Pennsylvania. With multiple congregations using each building, that is a lot of Elders to serve.
In California, the local County DAs would have the DA investigators dig up the names, and addresses and serve the records subpoenas and personal subpoenas, and do some initial questioning as needed.
The danger in Watchtower's eyes is for the DAs men to run into some bible reading true believer Elders who believe it is a SIN to lie to the cops.
This reminds me of the Bentleys of the San Francisco Bay Area. They are active and vocal Ex JWS. Roger was a straight-shooting sincere Elder who refused to lie under oath as ordered by Watchtower on a child molesting case (related to the Candice Conti case). His reward? Immediate disfellowshipping in.... absentia... (without any meeting) by Watchtower headquarters.
Great couple, and with a fascinating story. We met them at the California Lake Tahoe "Apostafest" a few years back.
Waiting with bated breath.