It’s funny because on September 1st, 2001 at around 8:45 am EST one of two hijacked planes hit the world famous Twin Towers north building. About 30 minutes later a second plane hit the south tower. A bit later in the morning a plane hit the Pentagon, the US Department of Defense’s headquarters. A fourth plane was brought down in a field in Pennsylvania thanks to the heroic passengers onboard the flight. This terrorist attack was the most deadly ever on US soil and led to the death 3,000 Americans.