A funny thing about becoming a pilot; you start hearing a lot more airplanes. With this unseasonably wonderful weather we've had a lot of little planes sightseeing over San Francisco. I used to be barely aware of it, now I hear every one.
It's a little obnoxious. What's hardest is I can't help but listen to whether the engine sounds healthy. Twice now I've run outside in alarm only to look up and realize the pilot just slowed the plane down in order to enjoy the view at a more leisurely pace.