Quite a few times, actually. If you live in a small town, it's only a matter of time until you hear about someone you know. "Oh! That's (so and so's) house!"
I heard my accountant apparently went north of 0.08% and got arrested, after which she was screaming and tried to kick the windows out. She's a feisty 70-something year-old. Did I mention anything? HECK NO! She's still a good accountant.
The worst is being a volunteer and getting a call to a friend or family member's address. You're fighting the adrenaline all the way there.
But then anyone who works in public safety goes through this too. I was a jail guard at one point in life. I ran into people I know who were "guests of the sheriff" many times, and out in the street, I ran into "alumni" many times. It's part of life doing that kind of work. I told my daughter to take the corrections test because she'd be able to keep seeing all her high school friends again.
Thing about scanning is there are a number of arcane rules and laws. It will do you more harm than good to tip someone you know off if they've gotten jammed up. Stay away from them. Same thing with talking specifics and names. If not for the rules that have been on the books since the 1930s, these people have lawyers who would love to find another source of getting more money. Back in my grandma's day, they used to say, "Loose lips sink ships."
Ears open, mouth shut is a good personal rule with that kind of stuff.