4th Nov , EMP drill US !

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North Koreans participated in night-time blackout drills last week, turning off their lights in preparation for the possibility of needing to hide from enemy sight,

 

[Shiji]

North Koreans participated in night-time blackout drills last week, turning off their lights in preparation for the possibility of needing to hide from enemy sight,

Modern warfare has almost negated use of darkness as concealment from enemy.