Southern California April 22, 2024 6:43 pm Construction begins on high-speed rail to Las Vegas Officials broke ground Monday on a new high-speed rail system that will connect Southern California and Las Vegas. Bailey Miller reports for the NBC4 News on April 22, 2024. US & World Videos 2:35 Irvine police release body cam footage of deadly shooting 2:27 Fontana police shoot man armed with metal pole 2:38 Pedestrian hit by car during police pursuit 1:46 High school guidance counselor accused of sexually assaulting teen 3:45 Experts call for more ways to track extreme heat