Whoa, I just remembered something... several years ago, when I was 9 or so, when Hurricane Floyd hit Florida, we had driven all the way to West Florida when, as we tried to sleep in a parking lot, we heard on the radio that the winds turned out to only be around 60mph in our area because the hurricane had veered off course a little.. so we drove back, right? Well, we got back around 1 AM. No power. We tried to go to sleep, and a few hours later, as I was just starting to doze off, I got the holy crap scared out of me when I heard, over the ramming wind and rain outside that shook the whole house constantly anyway, 4 or 5 loud BOOMs, less than a second apart, coming on fast and stopping fast. It sounded like it was right in the back yard. As soon as I heard it, I was so flipped I instantly covered my ears because I was so scared and I didn't want to hear it anymore, and when it stopped, I just closed my eyes and refused to open them for hours until I finally got my regular pulse rate back and somehow fell asleep. The next day, I asked my grandparents, and my grandfather didn't hear it (he can sleep through an atomic bomb), but my grandmother said she might have heard the end of it, as she woke up. We went out and cleared the debris, which included lots of leaves and a couple branches off of the big cherry tree we had at the time out front, but there was no way that could've EVER made that kind of noise. No way. And there was no heavy stuff at all anywhere.. and I know very well the common loud noises here.. 18-wheelers blowing tires at high speeds on Interstate 90 half a block from the house, the shuttle coming back to earth and breaking the sound barrier, stuff like that.. but this was very different, and I swear to God with all my heart and soul, this sounded like it was right in the back yard. To this day what I heard that night remains unexplained.