Affiliate Marketing Secrets

I have an indoor antenna that sits on top of our television. The other day, I had it scan for channels (because I heard about a newer channel in our area, so I wanted to make sure the antenna / guide were up-to-date).
When it was done searching, one of the channels it found was 6-1 KOIN HD, which is the CBS affiliate for Portland, Oregon, but I live over 215 miles away in southeastern Washington state! How is it getting the signal? There are no translators for that station anywhere around, and there isn’t a need for one, because my area has its own CBS, NBC, etc. affiliates.

I have been searching everywhere for the answer but can’t find it. If you watch any Sky+, Sky HD or regular Sky-affiliated broadcasts then you probably will have seen MGM’s Good Cop Bad Cop Season advertised on Sky. I was just wondering if anyone knows what the piano-based music in the background is? I’ve tried using Shazam but it comes back with no results.
The advert on Sky just says ‘Good Cops, Bad Cops and those who tread the thin blue line’. I was wondering if anyone knows what the music is?
Thanks!