Jill Biden on 9/11 Attacks: ‘I Was Scared to Death’

September 11, 2001 marked one of the gloomiest days in US history, as the deadliest terror attack in the country's history left at least 2,977 people dead and about 6,000 injured. On that day, al-Qaeda* terrorists hijacked four planes and conducted suicide attacks against several targets in the US, including the World Trade Center’s twin towers.