Take a moment today to remember victims of the 2001 September 11 attacks, often referred to as 9/11 (pronounced nine-eleven) On this day, hijackers intentionally crashed two airplanes in to the World Trade Center in New York City causing them to collapse. Hijackers crashed a third airliner into the Pentagon in Arlington, Virginia, just outside of Washington, D.C. The fourth plane crashed into a field in rural Pennsylvania, after some of its passengers and flight crew attempted to retake control of the plane.

Photo: Paul Arps