KNOXVILLE, Tenn. — Tennessee linebacker A.J. Johnson and defensive lineman Danny O'Brien have been arrested on alcohol-related charges and resisting arrest, authorities said Sunday. The Knox County Sheriff's Office says 22-year-old Johnson and 20-year-old O'Brien were taken into custody late Saturday. Johnson, a former Gainesville High standout who was named first-team all-Southeastern Conference selection last season, was charged with purchasing alcohol for a person underage and resisting arrest.