What Should You Do in Case of Nuclear Attack? ‘Don’t Run. Get Inside’

The threats seem to come almost daily now out of North Korea — ballistic missile firings, preparations to test a nuclear bomb and routine bravado. State-owned media in the rogue nation last week vowed a "super mighty preemptive strike," one that will reduce the U.S. to "ashes."

The invective is seen as overblown by American weapons experts, who believe Pyongyang is likely a few years from having the capability of firing a nuclear-equipped missile that can reach the U.S. mainland.

Yet some leading emergency response planners view the persistent menace of North Korea as a new opportunity: reason to alert the American public that a limited nuclear attack can be survivable, with a few precautions.