The Capitol, not the White House
I work a block away from the Capitol.
Report: Capitol Was Sept. 11 Attackers Fourth Goal (washingtonpost.com):
BERLIN (Reuters) - The U.S. Capitol Building, not the White House, was the fourth target of the Sept. 11 attackers, a German magazine reported Sunday citing results of interrogations of suspected al Qaeda leaders."
(snip)
"The fourth plane, according to bin al-Shaibah's questioning, should have hit the Capitol, the U.S. parliament ... U.S. authorities long suspected that it should have hit the White House. Only bin al-Shaibah's statement corrected the error," the magazine reported.