A Silver Alert has been issued for a missing Texas man. Coconino County Sheriff’s officials say 79-year-old Bobby Gray left Texas with his son en route to Lodi, California in two separate vehicles Saturday. While stopped at a rest stop west of Flagstaff, Bobby entered the driver’s seat of a red 2005 Dodge Dakota with a Texas plate BW74061 and started driving west on Interstate-40. The truck also had a gray 700 Honda Shadow motorcycle in the bed. The son and friend lost sight of Bobby and hasn’t been seen or heard from since. Bobby is a white male, five-feet-eleven inches tall and weighs 154 pounds with blue eyes and gray hair and has severe dementia. He was last seen wearing a button up shirt, blue jeans and glasses. If anyone know of Bobby’s whereabouts, contact the Coconino County Sheriff’s Office at (928) 774-4523 or 1-800-338-7888, or call Silent Witness at (928) 774-6111.