November 29, 2017 10:25 am Hawaii Prepares Nuclear Attack Sirens For the first time since the Cold War, an “attack warning” siren with a wavering tone will sound across Hawaii on Friday amid rising tensions over North Korean missile tests. KHNL’s Lisa Kubota reports. US & World Videos 1:23 Canton firefighter testifies in Karen Read murder trial 2:30 Protests continue at Tufts University 2:19 Here's how to stay up to date on the Karen Read trial 0:45 Karen Read trial Day 3: Witness testimony resumes 1:56 Campus unrest continues at Boston schools