sentences:  Heacock then served as the defensive coordinator, defensive line coach, and secondary coach at West Liberty University from 1985 to 1987.The next two seasons, he was a graduate assistant on Bo Schembechler's staff at the University of Michigan, where he worked with both the defensive backs and special teams during a stretch in which Michigan won two Big Ten Conference titles and the 1989 Rose Bowl.Heacock then moved on as an assistant coach at the United States Military Academy before joining the coaching staff at Youngstown State in 1991.