see my post at https://freerepublic.com/focus/chat/4000255/posts?page=411#411
that confirms aircraft part were found at/in the Pentagon.
The report/book that was compiled by the Office of Secretary of Defense is an official document/record, and is the most definitive record publicly available of AA 77 striking the Pentagon on 09/11.
Would you please read my post #87?
Thank you.