World Trade Center site
On the morning of September 11, 2001, Islamic terrorists affiliated with Al-Qaeda hijacked American Airlines Flight 11 and United Airlines Flight 175, both which were en route to Los Angeles, and intentionally crashed them into the two main towers of the World Trade Center. The towers collapsed within two hours of the collisions. 2,606 people, including 2,192 civilians, 71 law enforcement officers, and 343 firefighters, who were in the towers and in the surrounding area died in the attacks, as well as 147 civilians and the 10 hijackers aboard the two airliners. After the collapse of the World Trade Center, hospital workers and law enforcement officers began referring to the World Trade Center site as "Ground Zero".
Anthony Summers
Harnden said that there was "no real evidence" for Summers' and Swan's claims that the CIA negotiated with Osama bin Laden prior to those attacks, or of their attempt to recruit two of the hijackers as agents. While criticizing the authors for a lack of original research, failure to interview major figures within the Bush administration, and "habit of posing portentous questions without answering", he noted that their depiction of the "horrors inside the World Trade Center" and bravery of the Flight 93 passengers was "well written and moving".