The Rockwall Sheriff’s Posse suffered a tragic loss Wednesday.
The incident happened around 5pm as the Posse was preparing for the Rockwall- Heath Homecoming Parade.
Posse member Jayne O’ Reilly and Rocky were both headed to the beginning of the Parade when a bridle malfunction occurred, startling Rocky.
Jayne jumped off Rocky to try and calm him.
Rocky began running down Laurence Dr. striking an oncoming truck.
A veterinarian arrived to the scene and announced that Rocky would have to be euthanized.
The driver of the truck Rocky collided with was not injured.