For reasons unknown to me, our house is on a hot air balloon route.  When the weather is nice we get a few balloons floating over every week.  This morning two floated over . . . it almost seemed one was going to land in the park behind our house, or at least crash into the treetops, but fortunately all went smoothly and it floated on.  I took a picture of the one as it came close to the treetops in the park.  Kinda cool.  I always know when one is going over as I hear an intermittent ppshhhh sound.