We think that we may have heard a sonic boom a few weeks ago. It was unlike anything we had ever heard or felt before. The whole house shook, and it seemed like the shaking continued after the sound stopped. Everyone in our neighborhood went immediately outside. I don't remember the time, but it was already dark and all the porch lights came on, and everyone was in the street asking what was that?!? My parents live approximately 5 miles from us and they were outside at the time and heard nothing. Very, very strange. When we mentioned it to my dad he was the one who said it might have been a sonic boom.