Final answer:
United Airlines Flight 93, the fourth hijacked plane on September 11, 2001, crashed in a field in Pennsylvania after passengers tried to overcome the hijackers, preventing it from reaching its intended target in Washington, D.C.
Step-by-step explanation:
The fourth airplane, United Airlines Flight 93, was one of the four planes hijacked on September 11, 2001. Unlike the other three planes, it did not hit its intended target, which was presumably either the Capitol or the White House. Instead, it crashed in a field in Shanksville, Pennsylvania, after the passengers heroically attempted to storm the cockpit and disarm the hijackers. Tragically, all passengers and crew on board were killed in the attempted retake and subsequent crash.
This act of selfless courage by the passengers to prevent further catastrophe on that day is remembered as a powerful example of resistance in the face of terrorism. The overall event, planned by al-Qaeda, led to a significant loss of life and forever changed global politics and security. The intended goal of the terrorists was to inflict maximum damage and terror within the United States; however, the determination of Flight 93's passengers prevented a direct hit on the nation's capital.