The Tennessee Bureau Of Investigation Has Issued A Silver Alert For A Johnson City Man Who Is Missing. 77 Year Old Dale Covington Suffers From A Medical Condition And Was Last Seen Wearing A Blue, Plaid, Button-Down-Shirt And Blue/Gray Pants. He May Be In A 2014 White Toyota Prius With Tennessee Plate T2599B. Anyone With Information On Covington’S Whereabouts, Should Call 1-800-Tbi-Find.