The fact that there has not been much terrorism to worry about is not evident on the Tennessee fusion center's Web site. Click on the incident map, and the state appears to be under attack.

Red icons of explosions dot Tennessee, along with blinking exclamation marks and flashing skulls. The map is labeled: "Terrorism Events and Other Suspicious Activity.

But if you roll over the icons, the explanations that pop up have nothing to do with major terrorist plots: "Johnson City police are investigating three 'bottle bombs' found at homes over the past three days," one description read recently. ". . . The explosives were made from plastic bottles with something inside that reacted chemically and caused the bottles to burst."
Let me guess, it was either dry ice or Diet Coke and Mentos.