On Tuesday, September 11, 2001, a series of coordinated terrorist attacks shook the United States. Hijackers, who had taken control of four commercial airplanes, crashed two of them into the Twin Towers of the World Trade Center in New York City. The attacks resulted in the deaths of thousands of people, including many first responders and civilians. The buildings, which had stood as iconic symbols of American commerce and resilience, collapsed within hours, leaving a profound impact on the nation. A third hijacked plane struck the western side of the Pentagon, the massive headquarters of the U.S. Department of Defense, located just outside Washington, D.C. The attack caused significant damage to the building but did not result in the catastrophic collapse seen in New York. The fourth plane, United Airlines Flight 93, was headed toward a target in Washington, D.C., likely the U.S. Capitol or the White House. However, passengers and crew members on board fought back against the hijackers, leading the plane to crash into a field in Pennsylvania, saving the capital from further destruction. In the aftermath of 9/11, the United States experienced a dramatic shift in its domestic and foreign policies. The attacks led to the creation of the Department of Homeland Security and the launch of the War on Terror, which included military actions in Afghanistan and later Iraq. The event also deeply affected the American public, fostering a sense of unity and reflection on national security and values. The BBC spoke to Americans in Washington, D.C., about their experiences on that day and how 9/11 has shaped the country over the years. Many recalled the shock and fear of that morning, the loss of loved ones, and the ways in which the attacks changed their lives and the nation’s direction. The memory of 9/11 remains a pivotal moment in American history, influencing everything from policy decisions to cultural attitudes.