Twin Towers 'Tribute in Light' on Sept. 11, 2021

Beams of light shoot up into the New York City sky to commemorate the lives lost and heroic actions taken 20 years ago on 9/11 during the terror attacks. The beams consist of more than 80 vertical searchlights arranged in 2 columns to represent the Twin Towers.

Obama hails the heroes of 9/11

President Barack Obama has lauded the heroes of 9/11 — and of the years since — in a message to mark the 20th anniversary of the terror attacks.