On September 11, 2001, armed terrorists hijacked four airplanes and crashed them into the World Trade Center in New York City, the Pentagon in Washington, DC, and an open field in Pennsylvania. These actions not only killed thousands of innocent Americans but also angered and then rallied the people of the United States to take decisive action. How the United States would respond to this crisis and prepare to prevent future actions like these would prove very important for public safety in the United States.