The newly appointed CIA Director Porter Goss, believes that terrorists may bring urban warfare techniques learned in Iraq to our homeland. If he is right, we could have a whole new war on our hands. The prospect is indeed scary. The idea of terrorist cells operating clandestinely in the United States, quietly amassing handguns and assault rifles, and planning suicide shooting rampages in our malls, is right out of Tom Clancy’s most recent novel. If not for the fact that the 9/11 attacks were also foreshadowed in a Clancy novel, I would have given the idea no further thought. However,...