Melton's wife, Heather Gulish Melton, said she is in complete disbelief.
"At this point, I'm in complete disbelief and despair. I don't know what to say. Sonny was the most kind-hearted, loving man I have ever met. He saved my life and lost his," Heather said in a statement to Fox 17 News.
A coworker said the Meltons were in Las Vegas celebrating their first wedding anniversary.
Melton worked as a nurse at Henry County Medical Center, where his wife also works as an Orthopedic Surgeon. Community members also tell Fox 17 that Heather is the team physician for the Henry County High School football team.