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 0:45 Salmonella cases shut down restaurant in Valencia 1:34 Firefighters injured in Irvine crash were returning from battling Airport Fire 3:21 Eight firefighters injured after rollover crash in Irvine 4:03 Deadly explosions in Lebanon escalate tensions in the Middle East 2:41 West Hollywood valet attacker may be linked to more assaults