Unintended EMP strike

A quick story I just found. A military (Air Force) radio signal was being tested in Colorado that would be used to communicate with first responders during some future disaster...the problem is it is in the same electromagnetic band as the signals used in 50 million garage door openers. Hundreds of calls were received by residents who could no longer operate their garage doors. While this is a bit amusing, it also should keep in the front of our minds how easy it is to cause widespread disruptions of everyday life with common, cheap technology. We need to have plans in place for a future EMP attack, where redundant and resilient features are built into our electronic, computerized society.