Just before 9/11, FEMA claimed that there were three new "grave" threats to the United States of America. They included a New York City terrorist attack, a superhurricane smashing New Orleans apart, and a superearthquake along the state of California's San Andreas Fault. What are the odds that all three of these have happened?
Only a fool would believe that the United States military couldn't have prevented 9/11, using its all-powerful air-defense capacities, if they didn't really want to. See how new technology is changing the face of warfare.