Silicon Valley entrepreneur Julie Fredrickson remembers clearly the moment she decided to become a “prepper” – somebody who prepares for the worst-case scenario.
It was late October 2012 and Hurricane Sandy had just hit New York. “There was a large, almost phosphorescent flash and that was the main power plant that powered all of lower Manhattan going out.
“There was this bright, other-wordly eerie green and then everything just went black,” she says.
