Terrorists hijacked four commercial aircraft and used them like guided missiles: two hit the World Trade Center Towers, New York, NY; the third exploded into the Pentagon, Washington, DC; the fourth failed to make its intended destination and crashed in rural Pennsylvania.

The resulting devastation is still being discovered. People are asking: How could this happen?

Speculation indicates that followers of known terrorist and extremist Osama bin Laden are responsible for the recent terrorist attack on the United States. Find out more about Islamic terrorists:
The Islamic Threat: Myth or Reality?>
Warriors of the Prophet: The Struggle for Islam >

Read about airport security, what airlines and airports need to do to protect citizens from terrorist attacks, and about hijackings through history:
Air Piracy, Airport Security, and International Terrorism: Winning the War against Hijackers>

What makes a terrorist commit such horrendous acts? Read a recent journal article from Peace and Conflict:
A Model of the Psychological Causes of Oppositional Political Terrorism>

Find out about other terrorist plots carried out in England, Germany, Italy, France, Israel, and the United States:
The Deadly Sin of Terrorism: Its Effect on Democracy and Civil Liberty in Six Countries>

New York City's skyline has changed forever. Read about the World Trade Center's proud history in this 2001 publication:
Divided We Stand: A Biography of New York City's World Trade Center>

How the United States government investigates terrorists:
The U.S. Intelligence Community>

When contemplating acts of terrorism, experts assumed that the weapons used would be highly sophisticated chemical and biological agents. Read more:
The New Terrorism : Fanaticism and the Arms of Mass Destruction>

The Questia team wishes to express our heartfelt thoughts and prayers to the victims, their families, and friends.

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