Compare Pentagon and Brazil plane crash pictures

The difference is remarkable. There's a glaring scarcity of wreckage at the site of the Pentagon crash. The wreckage of the Airbus 320 that crashed into a building in Sao Paulo, Brazil on July 18, 2007 is visible, and recognizable.

Arlington County Fire Chief Ed Plaugher—at a Dept. of Defense News Briefing with Assistant Secretary Victoria Clarke on September 12, 2001—when asked: "Is there anything left of the aircraft at all?" said: "there are some small pieces of aircraft ... there's no fuselage sections and that sort of thing."

It is estimated that the Airbus 320 was moving across the runway at three to four times the normal aircraft landing speed before it crashed.