The United States marked the 25th anniversary of the September 11 attacks with memorial rituals, moments of silence, and readings of victims' names, Trinidadtribune reports.
Why it matters: The milestone highlights the enduring national impact of an event that nearly half of American adults still remember as the most historic of their lifetime, according to Trinidadtribune.
- Al-Qaida extremists hijacked four commercial jets in 2001, crashing them into the World Trade Center, the Pentagon, and a field in Pennsylvania, killing nearly 3,000 people Trinidadtribune.