I already mentioned few times in this thread that I believe an AA77 crashed into the pentagon. Most of the debris may have delved into the ground afterall it was travelling at 530 mph when it hit. Plus, cops and firemen are regular joes like you and I so how'd you think they'd react if they saw something that wasn't a boeing or even if there wasn't anything at all?
Here's a good website of the debunking of no plane theory at the pentagon by an sept 11 activist...
http://flight77.info/old.htm
Like I said before, the real question should be asked is why fighter jets were not deployed at the time of the pentagon crash, especially after the fact NYC was first attacked 45 minutes prior to the pentagon crash.
More here at the sept 11 commission report on the AA77/AA11 confusion as if the communication between FAA, NEADS and NORAD was designed to fail...
http://www.9-11commission.gov/report/911Report_Ch1.htm
Lastly if the white house had received numerous warnings of when, where and how bin Laden was planning an operation to hijack planes and use it as missiles to strike US landmarks, then why did wargame exercises on that morning went ahead as planned on sceduled? Was it design to confuse the FAA and NEADS as to which is real and which is fake?