On September 11, 2001, 19 terrorist members of Al-Qaida (an extremist Islamic network) hijacked four commercial airliners. In a coordinated attack, the hijackers deliberately blew up two planes targeting the Twin Towers of the World Trade Center and a third plane targeting the Pentagon.
The attack caused 2,977 deaths, more than 25,000 injuries and serious long-term health consequences. In addition, infrastructure and property losses amounted to at least US $ 10 billion. This was the deadliest terrorist attack in human history and the death toll of firefighters and law enforcement personnel. Incident: 340 and 72 military officers in US history died respectively
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