Tyler County Sheriff Brian Weatherford reminded citizens on Monday that a Dam B man is still missing. He is 72-year-old Thomas Thornton, and the Vietnam veteran was last seen leaving his home to go to WalMart in Jasper on the evening of Wednesday, March 24th. Family members say Thornton is in the early stages of dementia and they fear for his well-being. Thornton is a white male, he is balding and has gray/black hair. He usually wears a veteran cap and wears t-shirts and carpenter jeans. He was driving his dark gray 2017 Ford Edge SUV with Texas license plate NJJ-8580.