coronavirus February 3, 2020 5:54 pm Americans Remain Under Quarantine at Air Force Base Do masks help protect people from the novel coronavirus? Tony Shin reported on NBC4 News at 5:30 p.m. on Monday, Feb. 3, 2020. (Eric Chavez) US & World Videos 18:12 Police begin to clear protesters from USC campus 2:34 Campus police union blames UCLA for violent response 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation
