I happened to have a trip planned to the DC area after 9-11. I saw the hole in the pentagon. It appeared to be tunnel like. The most curious thing to me at the time was that there were no wing debris in any photos, there was no torn fuselage in any photos. The hole was ground level so an airplane would have had to be basically like it was on a runway, going at great speed to put the hole that low on the building. Also did the "plane" have any passengers? If a plane was flying that low on the approach to the pentagon, there would have been thousands of witnesses to an aircraft coming in over the area flying that low over homes and businesses!!