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 3:08 Taggers take over Hollywood Hills mansion 2:01 Salmonella outbreak temporarily shuts down Valencia restaurant 2:16 8 firefighters injured in Irvine rollover crash 0:45 Salmonella cases shut down restaurant in Valencia 1:34 Firefighters injured in Irvine crash were returning from battling Airport Fire