The September 11, 2001 terrorist attacks killed nearly 3,000 people at the World Trade Center in New York City, the Pentagon, and near Shanksville, Pennsylvania, and they followed the 1993 World Trade Center bombing that killed six people. Nineteen al Qaeda hijackers seized four commercial airplanes, crashed two into the Twin Towers and one into the Pentagon, and Flight 93 went down in western Pennsylvania after passengers fought back. The Twin Towers, completed in 1973 as the centerpieces of the World Trade Center complex, were 110 stories tall, housed about 35,000 people and 430 companies, and were surrounded by five other buildings that were also destroyed or fatally damaged when the towers collapsed. At 8:46 a.m. Flight 11 struck the North Tower, and at 9:03 a.m. Flight 175 struck the South Tower; although most of the 16,400 to 18,000 people in the complex evacuated safely, many were trapped or injured as first responders rushed in. Fires fed by jet fuel weakened the steel support trusses and structural columns, leading to the South Tower’s collapse at 10:00 a.m. and the North Tower’s collapse at 10:29 a.m., while Flight 77 hit the Pentagon and Flight 93 crashed in Pennsylvania. Rescue and recovery began that afternoon and continued for nine months amid vast debris, displacement in Lower Manhattan, grief, confusion, and unity, while rebuilding plans for the site moved forward. In Fulton County, a salvaged twelve-foot World Trade Center steel beam was brought to Wauseon in 2011 with ceremonies along its route, and a county memorial was begun in 2013 and completed in 2014.