I'm just hitting the jackpot lately. Yesterday afternoon I heard a different radial engine sound in the distance. A few minutes later a B-17 flew over.
This time one of the guys working with me actually looked up and noticed when it was almost directly overhead and a few others did too. (we were working on stuff with a fork lift outside so they were looking up anyway and it was kinda hard to miss) The guy who noticed first identified it as a B-52 and said it was an old bomber of some sort. Well, at least they're getting closer to knowing something this time -- kind of like being pretty sure that history happened in the past - but it's a start.