September 11, 2001 was a day that changed America-and the world. This book examines the terrorist attacks on the United States and events of the tragic day while providing firsthand accounts from witnesses, first responders, and victims. Discover the heroic sacrifices firefighters and police officers made as they rushed into the burning buildings. Experience the difficult choices government officials were faced with as they arrived on the scene and tried to make sense out of chaos. Finally, learn how the United States changed its laws to better protect its citizens in the war against terror.