After the attacks, virtually every member of the Bush administration put forth the talking point that,
"No one could have anticipated anyone using airplanes as bombs."
The facts tell a different story.
In 1993, a $150,000 study was undertaken by the Pentagon to investigate the possibility of airplanes being used as bombs. A draft document of this was circulated throughout the Pentagon, the Justice Department, and to the Federal Emergency Management Agency. In 1994, a disgruntled Federal Express employee invaded the cockpit of a DC10 with the intention of crashing it into a company building. Again in 1994, a pilot crashed a small airplane into a tree on the White House grounds, narrowly missing the building itself. Also in 1994, an Air France flight was hijacked by members of a terrorist organization called the Armed Islamic Group, who intended to crash the plane into the Eiffel Tower.
The 1993 Pentagon report was followed up in September 1999 by a report titled "The Sociology and Psychology of Terrorism." This report was prepared for the American intelligence community by the Federal Research Division, an adjunct of the Library of Congress. The report stated, "Suicide bombers belonging to Al Qaida's martyrdom battalion could crash-land an aircraft packed with high explosives into the Pentagon, the headquarters of the CIA, or the White House."