text: Others tow all cars within a one-mile radius , weld closed all manhole covers , remove all trash cans , lock all mailboxes , and assign 7,000 cops to the scene , while denying the existence of any specific threat .
  
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  Others tow all cars within a 50-mile radius , leave manhole covers open , and make sure all trash cans are properly places while publicly spreading information about a specific threat .