He was worth more than $2 million, relatives said. Before retiring, he made a small fortune from real estate deals and a business that he and Eric Paddock sold off. He traveled a lot and had millions of free airline miles.

At various points of his life, Stephen Paddock worked for defense contractor Lockheed Martin and as an accountant and property manager. As a retiree, he had no children and plenty of money to play with. So he took up gambling.

“It’s like a job for him. It’s a job where you make money,” said Eric Paddock, adding that his brother could lose $1 million and still have enough to live on. “He was at the hotel for four months one time. It was like a second home.”