Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Hawaii Revives Cold War Relic: Test System for Nuke Attack by Associated Press HONOLULU -- Hawaii is preparing for the possibility of a nuclear strike from North Korea days after the nation tested its most powerful weapon to date. The state on Friday will start testing a siren intended to warn people of an impending nuclear attack. It will be incorporated into monthly testing of the warning system for natural disasters. The attack warning will produce a different tone than the long, steady siren for tsunamis and other events. It'll include a wailing sound in the middle to distinguish it. The test comes the same week that North Korea fired a powerful nuclear-capable intercontinental ballistic missile that some observers believe could reach the U.S. mainland. Hawaii is the closest state to North Korea, and its large military presence could make it more of a target.