Houston billionaire Tilman Fertitta lost an employee in Las Vegas. The casino owner tells KHOU she was a 31-year-old server at Mastro's, a Vegas restaurant.

We still don't know her name, but Landry's Inc. is pledging it's support for her family with four young kids.

"We're going to do whatever we can do as a company to reach out and help this family," said Fertitta.

Landry's Inc. employees thousands of people in Las Vegas at the Golden Nugget casinos and other restaurants.

"We're organizing a blood drive right now at the Golden Nugget, we're reaching out to help the first responders, to Mandalay Bay to see if we can help them out with rooms, since their property is closed," said Fertitta.

He says it's hard to stop a guy who wasn't even at the actual event, but there are things we can all do.

"Family members, friends need to look for the people that have a mentally deranged issue, and then where did this guy by all these guns?" said Fertitta. "I'm from Texas, of course I'm for guns, but we got to be more careful who we are selling the guns to."

He also had a VP of his casino at the concert, thankfully he is ok.