September 11, 2001, like the bombing of Pearl Harbor on December 7, 1941, is a day that lives in infamy. But 9/11 was different in the sense that the attacks targeted not only a military site—the Pentagon building in Virginia—but an internationally recognized building which was the workplace for thousands of civilians, New York City’s World Trade Center. Nearly 3,000 people died on 9/11 in Virginia, New York and Pennsylvania as a group of terrorists hijacked four commercial airplanes, and turned them into weapons of mass destruction.