If one stands at the center of the World Trade Center Patio and looks directly at the center of the 9/11 Monument , the line of sight will show where American Airlines Flight 11 crashed into the far side of the North Tower of the World Trade Center and where United Airlines Flight 175 crashed into the near side of the South Tower of the World Trade Center . If one stands at the center of the William C. Daywalt Sr . Memorial Gazebo and looks directly at the center of the 9/11 Monument , the line of sight will show where American Airlines Flight 77 crashed into the far side of The Pentagon and also traces the flight bearing of United Airlines Flight 93 before it crashed in Shanksville , Pennsylvania
United Airlines Flight 175
United Airlines Flight 175
King of Prussia Volunteer Fire Company 9/11 Memorial