I'd politely let him know that his pistol is visible. It's not really such a big deal. I've had 2 LEOs who did the same for me when I accidentally exposed while at a hospital (same hospital both times, different LEOs, no 30.06).
In the reverse scenario: The other day I was working in my garage/wood shop and was not wearing an over shirt so my pistol was in plain view. Our municiple water guy showed up to check on our water pipes because of a leak I reported. He did his business and then came up to give me a report on what they were going to do. He saw my gun and it turns out he's a CHL as well. Needless to say, we spent more time talking guns than he spent checking the leak. LOL. No muss, no fuss.
Before anyone starts cautioning me about OC on my property while in plain view....
1) It's perfectly legal.
2) I know my neighbors and they're all ok.
3) I've got several LEOs who live in the immediate area and they have no issues with it either.
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