"Since September 11, the U.S. has significantly improved its security to prevent another attack"

This quote by Timothy Murphy is referring to the terrorist attacks of September 11, 2001. In the wake of this disaster, the United States has actually taken substantial steps to improve its security measures in order to prevent another attack. This includes increased security, improved intelligence event, and the application of new laws and regulations. The Department of Homeland Security was created to coordinate the efforts of numerous federal government firms to secure the nation from terrorism. The U.S. has actually likewise increased its military existence in the Middle East and other areas of the world in order to combat terrorism. Additionally, the U.S. has actually increased its cooperation with other countries in order to share intelligence and resources in order to avoid future attacks. These efforts have succeeded in avoiding another attack on U.S. soil because September 11, 2001.