Operation Enduring Freedom

on 11 September 2001, a commercial airplane crashed into the north tower of the World Trade Center complex in New York City. At that time, the severity of the incident, the numbers of people involved, and the reason for the crash were all unknown. Shortly, a second plane hit the south tower of the World Trade Center.
Later on, reports came in that another commercial plane hit the Pentagon, in Washington, DC, and a fourth commercial plane was downed in Somerset County, PA, about 80 miles southeast of Pittsburgh. Shortly the south tower of the World Center collapsed. Within the next half-hour, the northern tower of the World Trade Center also collapsed.
After the September 11, 2001, attacks on the World Trade Center and the Pentagon, the United States military entered into a war against global terrorism. The President began the U.S. response in the War on Terrorism with the stroke of his pen to seize terrorists' financial assets and disrupt their fundraising network. Unlike most previous conflicts, this war is being fought on both domestic and foreign soil. Deployment of American troops to Southwest Asia and countries surrounding Afghanistan in the days following the attacks.
The military response to the 11 September 2001 terrorist attacks on the United States was assigned the name Operation Enduring Freedom, but was previously planned to have been called Operation Infinite Justice (this name is believed to have been changed following concerns that this might offend the Muslim community as Islam teaches that Allah is the only one who can provide Infinite Justice).

http://en.wikipedia.org/wiki/Operation_Enduring_Freedom