Willer and Jimeno were shot by their neighbor in May 2015, and prosecutors said Willer was shot when he tried to intervene.
Willer, who has no prior convictions, has pleaded not guilty.
His attorney, Steve Buehner, said his client is cooperating with authorities.
Willers wife, Tiffany Willer-Reed, is accused of shooting Jimeni in the back after a verbal argument that started over whether the neighbor should be allowed to come into their house.
She’s accused of hitting Willer with a hammer in the head, then running to a neighbor’s home and shooting him, prosecutors said.