coronavirus March 23, 2021 5:55 pm Coronavirus Pandemic: What to Know for the Evening of March 23, 2021 NBC 7’s Mark Mullen has everything you need to know about the coronavirus pandemic for the evening of March 23, 2021. US & World Videos 3:04 Witness of Del Mar shark attack says victim ‘truly fought for his life' 2:53 Shark scientists using new DNA technology to track white sharks in San Diego's waters 2:10 Thousands run in San Diego's annual Rock ‘n' Roll Marathon 0:26 Crews battling fire across US-Mexico border near Otay Mountain 2:43 Large voter turnout at San Diego Mexican Consulate in Little Italy for presidential election