Nine-eleven was the world's worst terrorist atrocity. Julian Fox intends to change that fact. The planning will take months. The attack will take just two minutes. Nine-eleven involved four airliners, three buildings, and 3,000 deaths. What Fox is planning will down 1,300 airliners, devastate countless city centers, and kill around half a million people. His method won't require a single hijacker, just 23 lines of computer code.