Nevada’s University Medical Center was grappling Monday with an influx of patients after a gunman opened fire on a Las Vegas country music festival Sunday night, killing more than 50 people and injuring more than 500 in what is one of the deadliest mass shootings in modern U.S. history.

We don’t yet know the details about the injuries sustained by the victims, but an executive at the medical center, where many of the injured are being treated, told CBS News she was hopeful for one key reason: Her trauma center has a 97 percent survival rate, even in the most dire cases. “Hopefully [the victims] will all be able to be treated and released after some surgical procedures and some very good care here in our intensive care units,” said Danita Cohen, UMC’s chief experience officer.