Today marks the 25th anniversary of the 9-11 attacks, reflecting on the lives lost and their lasting impact on America. Commemoration activities include wreath-laying, flag-flying, moments of silence, and reading victims' names. The 9-11 attacks involved al-Qaida hijacking four planes, targeting key U.S. landmarks, and resulting in nearly 3,000 deaths. The attacks collapsed the Twin Towers and damaged the Pentagon, profoundly affecting U.S. economic and military symbols. Americans united in grief and purpose post-attack, vowing to confront al-Qaida with the phrase, 'We will never forget.'