Worldwide Terrorism & Crime Against Humanity   Index 2 planes crashed into the World Trade Center this morning - part of a series of terrorist attacks. Photo by BIG PICTURES/ZUMA Press The south tower collapses as smoke billows from both towers of the World Trade Center, in New York, Tuesday, Sept. 11, 2001. In one of the most horrifying attacks ever against the United States, terrorists crashed two airliners into the World Trade Center in a deadly series of blows that brought down the twin 110-story towers. AP Photo/Jim Collins Smoke and debris erupt from the south tower of the World Trade Center as it explodes after two jets crashed into the buildings Tuesday, Sept. 21, 2001, in New York. Terrorists crashed two airliners into the World Trade Center in a closely timed series of blows Tuesday that brought down the twin 110-story towers. AP Photo/Jerry Torrens The remaining tower of New York's World Trade Center dissolves in a cloud of dust and debris about a half hour after the first twin tower collapsed. Each of the towers were hit by hijacked airliners in one of numerous acts of terrorism directed at the United States September 11, 2001. The pictures were made from across the Hudson River in Jersey City, New Jersey. REUTERS/Ray Stubblebine The Statue of Liberty, right, stands at the entrance to New York Harbor as the twin towers of the World Trade Center burn in New York City in this view from Jersey City, N.J., Tuesday, Sept. 11, 2001, after the attacks on the towers and at the Pentagon in Washington. AP Photo/Mike Derer Attack on the Pentagon Rescue helicopter surveys damage to the Pentagon Building as fire fighters battle flames after an apparent terrorist airplane crashed into the U.S. military Headquarters outside of Washington, September 11, 2001. Three hijacked planes crashed into U.S. landmarks on Tuesday, destroying both of New York's mighty twin towers and plunging the Pentagon in Washington into flames in an unprecedented assault on key symbols of U.S. military and financial power. FREUTERS/Larry Downing Flight 93 in Pennsylvania Inspectors walk around the wreckage of a United Airlines plane in a field near Shanksville, Pa., Tuesday, Sept. 11, 2001. The jetliner carrying 45 people crashed into a grassy field Tuesday morning, moments after a man who said he was a passenger told an emergency dispatcher in a cell phone call: ``We are being hijacked, we are being hijacked!'' AP Photo/Kalim A. Bhatti God Bless America!