During the mass shooting in Orlando, emergency response played a big role in saving lives. 8 News NOW looks at how local hospitals prepare in the event of a similar event in Las Vegas.

Las Vegas has seen its share of mass casualty events.

The most recent event occurred in December 2015, when a woman plowed through a crowd of visitors on the Strip, killing an Arizona woman and injuring 35 others.

The majority of the victims were taken to University Medical Center, the only Level I trauma center in Clark County.

“A Level I trauma center is the highest level of care. It treats the most badly injured of patients,” said UMC Medical Director of Trauma Dr. John Fildes.

He says, while UMC receives the most critically injured patients, other area hospitals play a crucial role during a mass casualty event.

“When you go to the other hospitals in the community, they’re the same. They have significant assets in their emergency departments,” he said.

Hospitals are alerted to be on stand-by to receive patients. Sunrise Hospital also treated victims of the Strip crash late last year.

“At that point, we take that opportunity to check the resources that we have available, such as our staffing, beds availability… take the opportunity to take our less acute patients out of the emergency department,” said Sunrise Hospital Director of Trauma Services Alma Angeles.

Hospitals around the valley take part in county-wide emergency drills twice a year.

Trauma centers also see an influx of patients during major events, including New Year’s Eve and Electric Daisy Carnival.

“EDC is a really good example of event medicine and the science of disaster mitigation,” Dr. Fildes said.

During major events, hospitals staff up. They also have on-call schedules to make sure enough medical personnel are available.