Return To Your Garage, Await Further Instructions
Last week an Air Force facility in Colorado Springs, Colorado, tested a system that would be used to communicate with first responders nationwide in the event of a homeland security threat. Hundreds of garage doors in the area stopped working. It turns out they’re broadcasting at a radio frequency of 390 megahertz which — whoops! — also happens to be the frequency that controls about 50 million garage door openers. And has since the early 1980s. Which can be discovered as easily as reading the first sentence of the garage door opener entry in Wikipedia.