United Airlines Flight 93

United Airlines Flight 93 was a domestic scheduled passenger flight that was hijacked by four al-Qaeda terrorists on board, as part of the September 11 attacks. It crashed into a field in Somerset County, Pennsylvania, during an attempt by the passengers and crew to regain control. All 44 people on board were killed, including the four hijackers. The aircraft involved, a Boeing 757-222, was flying United Airlines' daily scheduled morning flight from Newark International Airport in New Jersey to San Francisco International Airport in California.

The hijackers stormed the aircraft's cockpit 46 minutes after takeoff. The captain and first officer struggled with the hijackers, which was transmitted to Air Traffic Control. Ziad Jarrah, who had trained as a pilot, took control of the aircraft and diverted it back toward the east coast, in the direction of Washington, D.C., the U.S. capital. Khalid Sheikh Mohammed and Ramzi bin al-Shibh, considered principal instigators of the attacks, have claimed that the intended target was the U.S. Capitol Building.

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