Today In History: 11th September

2001: In an unprecedented, highly coordinated attack, terrorists hijack four U.S. passenger airliners, flying two into the World Trade Center towers in New York and one into the Pentagon, killing thousands. The fourth airliner, headed toward Washington likely to strike the White House or Capitol, is crashed just over 100 miles away in Pennsylvania after passengers storm the cockpit and overtake the hijackers.

2007: Russia detonates a nano-bomb; dubbed the “Father of All Bombs,” it is the largest non-nuclear weapon developed to date.