The specific reason for why they chose these four flights were due to the amount of fuel that was stored for the long trip to California. Two of the four planes, United Airlines Flight 11 and United Airlines Flight 175, were flown right into the buildings of the World Trade Center located in New York City. One of the four planes, United Airlines Flight 77, flew into the Pentagon located in Washington D.C. The final plane, which was United Airlines Flight 93, crashed into a field in Shanksville, Pennsylvania. The attack on the Twin Towers took place on a tranquil Tuesday morning at exactly 8:45 AM on September 11, 2001. The first plane, United Airlines Flight 11, hit the north tower. The plane was carrying 20,000 gallons of highly flammable
