Actually, a lot of that can probably be explained, or so I think. I\'m still formulating the ideas in my mind as I type, so if it doesn\'t make total sense...yeah
The pentagon\'s obviously heavily reinforced. Most likely a lot more so than a plane. When the plane hit the building, it most likely collapsed inward. That is why it only went far enough to damage the first ring.
The reason it only damaged the first floor is similar. The plane likely hit the building at a relatively high downward angle, causing it to collapse in from the top as well as the front. That\'s why it only would have damaged the first floor. The others were too heavily reinforced. It collapsed underthem, not having the force to initially knock them inwards.
First of all, some debris would have likely been cleared from the lawn to make room for emergence crews. This was a while later, as you can see by the fact that the upper floors have collapsed. Plus, there was nothing wrong with the plane until it made impact. At that point, if it was traveling at 250 miles per hour, and debris would likely end having the momentum to fly into the wreckage of the pentagon.
The dirt and gravel could have made it easier for repairs which would be made later. If there was any fire remaining in the building, it could have also helped to keep it from spreading.
With the wings, the plane would likely have been tilted at an angle from being flown by inexperienced pilots, who didn\'t take various wind factors into account. The wings aren\'t as strong as the body of the plane, and might have become dislodged or shattered from the initial force of the impact. Remember, the force of such an impact is beyond what any of us could likely imagine.
The Fire chief didn\'t see the plane hit. Its wreckage was most likely lodged within the first floor, which initially collapsed. He likely hadn\'t been in there due to the instability of above floors. When the above floors collapsed, they covered the plane\'s wreckage.
Of course I can\'t see the exact point of impact of the plane. There\'s water being sprayed in front of it. :rolleyes:
One thing their conspiracy theories are missing though. If the pentagon wasn\'t struck by a plane, how did they cause all that damage without the people on the nearby highway seeing a thing? Not to mention the eyewitness reports, and the fact that there\'s no reason why the government would destroy part of it\'s own central defense headquarters.