After watching Jan walk past me in the hallway, I realized the swooshing sound I had been listening to for nearly five minutes was not the vacuum cleaner. I started for the kitchen when it dawned on me my dogs had also been barking incessantly and insistently for about the same amount of time. Holy cow! What was making such a loud noise if not coming from within the house. I looked out the kitchen window only to see the basket of a brightly colored hot-air balloon passing my backyard just 25 feet above the ground. What a shock! I ran for my camera and posted the resulting photos. I will follow up later with details if I find out more information.