FILE - In this Jan. 13, 2018, file photo provided by Civil Beat, cars drive past a highway sign that says "MISSILE ALERT ERROR THERE IS NO THREAT" on the H-1 Freeway in Honolulu. The Hawaii state employee who mistakenly sent the alert warning of a ballistic missile attack is refusing to cooperate with federal and state investigators, officials said Thursday, Jan. 25. (Cory Lum/Civil Beat via AP, File)
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