WASHINGTON, D.C. - The Pentagon is scrambling to protect America's power grid amid fears of imminent nuclear EMP attack by North Korea. North Korea warned the U.S. on Monday that "nuclear war may break out any moment." On April 21, three major U.S. cities – New York, Los Angeles and San Francisco – experienced virtually simultaneous power outages. Businesses emptied. Schools closed. Subway commuters were stuck underground in the dark.Rumors immediately started flying that a cyber-attack had caused all three blackouts. The "official" word in San Francisco was that the outage was caused by a fire in a substation. In Los Angeles, high winds were blamed. In New York, an equipment failure was the announced culprit. Perhaps those were the real causes. Or maybe these simultaneous blackouts were dry runs for future attacks. We may never know the truth. One city - Accident ok, two Cities -maybe, But THREE ar the same time- NO WAY. But it may not be External (North Korea). What about just another ploy to rise utility rates or a means to destroy our way of life (remember 1939, Hitler & the radio station?.