BETWEEN WALKER AND WESTERN. NO WORD ON ANY INJURIES IN A SILVER ALERT HAS BEEN ISSUED BY THE OKLAHOMA HIGHWAY PATROL ON BEHALF OF THE WASHINGTON COUNTY SHERIFF'S OFFICE. >> 88 YEAR-OLD KENNETH MADDUX WAS LAST SEEN YESTERDAY AROUND ONE CHILE TO THAT'S NEAR BARTLESVILLE. HE WAS WEARING A GREEN JACKET JEANS AND LIGHT BLUE SHOES. MADDUX IS BELIEVED TO BE IN A BLACK BUICK ENVISION WITH A TAG NUMBER OR IN 3.75 AND HAS HEART .