September 11 attacks

The September 11 attacks, colloquially known as 9/11, were a coordinated series of suicide attacks perpetrated by the Islamist terrorist organization al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four airliners, then flew one into each of the Twin Towers at the World Trade Center in New York City. The third plane crashed into the Pentagon, the headquarters of the United States Department of Defense, in Arlington County, Virginia. The fourth plane crashed in a rural Pennsylvania field during a passenger revolt. In response to the attacks, the United States launched the global war on terror, seeking to eliminate hostile groups deemed terrorist organizations, and the governments purported to support them. This foreign policy agenda was conducted over the next two decades.

A hypocenter or hypocentre, also called ground zero or surface zero, is the point on the Earth's surface directly below a nuclear explosion, meteor air burst, or other mid-air explosion. In seismology, the hypocenter of an earthquake is its point of origin below ground; a synonym is the focus of an earthquake.

United States Air Force base near Omaha, Nebraska, USA

grounds of the World Trade Center in New York City

collapse of the World Trade Center in New York City on September 11, 2001

terrorist attack planned for January 1995

former hotel in Manhattan, New York

United States Air Force base near Bossier City, Louisiana

song written and composed by Lee Greenwood, originally recorded by Lee Greenwood in 1983 and released in 1984

township in Somerset County, Pennsylvania, United States

American financial services company

tapestry by Josep Royo after a design by Joan Miró

hoax image related to the September 11th attacks on the World Trade Center

north tower of the former New York World Trade Center, destroyed in 2001

August 6, 2001 intelligence memo

former South Tower of the World Trade Center (twin towers) in New York City

possible additional terrorist in the September 11 attacks of 2001

public elementary school in Sarasota, Florida, United States

allegations that Saudi Arabia supported the 9/11 attacks

Motivations for terror attacks

defunct social networking service

former CIA unit