The search for a missing swimmer in Tellico Lake in Loudon County has turned into a recovery mission. Officers say 55-year-old Michael Carnock from Maryland was visiting his parents in Tellico Village when he went for a swim Tuesday around Jackson Ferry Island. The search efforts cover a large area of water as deep as 75 feet in places. Visibility is typically zero to five feet, which officials say has hampered efforts to find Carnock.