My brother was in the pentagon when it was hit. He also says it was a plane. From the other perspective, when Margaret, Kate and I played a coffeehouse in a Unitarian Church a year or so ago, there were pictures of Unitarian victims of 9/11. One was a photo of a family with two small children, all on a connecting flight to go to Australia for holiday. They, of course, were in the plane that hit the pentagn. I don't know how you'd tell their relatives that they weren't really involved.