Hijackers crash Flight 11 into floors 93-99 of the World Trade Center's North Tower, killing everyone on board and hundreds within the building.

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1 “South Tower Hit” 911 Digital Archive George Mason University n.d. Web. April 27, 2011 http://static.911digitalarchive.org/REPOSITORY/IMAGES/PHOTOS/2792.jpeg
Courtesy of the National 9/11 Memorial and Museum