Delta flight makes rapid descent after sudden pressurization fault, oxygen masks drop

Delta Air Lines Flight 2311 from LAX to SLC experienced an unexpected pressurization fault, prompting a rapid descent of about 27,000 feet in 10 minutes and the deployment of oxygen masks; the flight diverted to Las Vegas and landed safely at Harry Reid International with 174 passengers and 6 crew aboard, while Delta apologized and praised its crew for following safety procedures.