Well as I posted on a different forum earlier, I have had thee suspicious person calls that were cachers, one was looking for one of my hides. We have had a pipe bomb detonate in a city park, and in the search of the area an ammo box cache was located. However I was there and was able to explain as was my LT who is a geocacher too.
Luckily, our two big local papers in Dallas and Ft Worth had done several articles on geocaching so that healped spread the word. Like the other Officer said, I have several caches hidden in the city where I work so I keep on eye on them.