Excerpt from Chapter Three: Improving Security for Travelers “The Federal Bureau of Investigation, the Central Intelligence Agency, and other intelligence sources have been warning that the threat of terrorism is changing in two important ways. First, it is no longer just an overseas threat from foreign terrorists. People and places in the United States have joined the list of targets, and Americans have joined the ranks of terrorists. The bombings of the World Trade Center in New York and the Federal Building in Oklahoma City are clear examples of the shift, as is the conviction of Ramzi Yousef for attempting...