In the Republican presidential debate last Saturday, Ted Cruz laid out a dark scenario to demonstrate the need for a beefed-up missile defence system - the same one Rick Santorum and Ben Carson had raised before him in earlier debates. He said that North Korea was working on a satellite, which could spell doom for America: "As it would orbit around the Earth, and as it got over the United States, they would detonate that nuclear weapon and set off what's called an EMP, an electromagnetic pulse which could take down the entire electrical grid on the eastern seaboard, potentially killing millions." The very day before Cruz spoke, in the tatty, cavernous but crowded Expo Idaho Center in Boise, speaker and entrepreneur Ben Gilmore laid out a much more elaborate version of the same catastrophe. Speaking to a rapt audience at prepper expo SurvivalCon, Gilmore pointed to a projected map showing much of the North American continent swathed in a deep red. "An EMP bomb 300 miles up gets all of the United States ... this is the worst-case scenario, and it is the most probable." But also - in a stroke of luck - Gilmore's own company, Techprotect, makes "Faraday bags" in which electronic items can be shielded from electromagnetic pulses. This mixture of End Times thinking, geopolitical speculation and rightwing ideology was repeated not only in the other formal presentations, but in conversations on the floor of the Expo Center. The Idaho show showed continuing strong links persist between prepping, religious fundamentalism and the far right.