Maricopa Sheriff Joe Arpaio worries it's a trend we'll see more of as baby boomers age.
"This happened twice in our area since November. We're getting older. Is this going to become more prevalent to take someone's life because your spouse is suffering? We're going to have to face that issue," he said.
Rudolph is in jail for murder. Police still have a lot of questions, they don't know if he had planned to kill himself, or how long he'd planned this.
They also say he admitted to drinking Wednesday morning, before deputies showed up.