A Scottsdale father drove to Las Vegas after getting a call no parent wants to hear -- his son was in the hospital after a mass shooting.

Bill Robinson's son was at the Sunday concert with friends, while his father, also Bill, was at home in Scottsdale.

Before news of the shooting had even broke, Bill Sr. received a text from his son saying he'd been shot but he was alright, thanks, in part, to his wallet.

The bullet hit Bill Jr. in the hip before getting lodged in his wallet.

"He's just shook up, obviously as you would be," Bill Sr. says of his son. "Just so much hate, I just can't understand the people...who have no reason to hate."

See Steve Irvin's full interview with Bill Robinson Sr. in the player above.