DCS Under Fire is a collection of stories representing WREG's coverage of problems at the Tennessee Department of Children's Services. Our team began an in-depth investigation into the child welfare agency more than a year ago. The very agency charged with protecting the state's most vulnerable had kids dying on its watch. We exposed unexplained deaths, questionable actions by case workers as well as failed technology and policies. Our continuous coverage raised concerns from parents, advocates and lawmakers. Since the start of our investigation, and later a court battle for access to public records, DCS has overhauled its staff and changed a number of policies and procedures to better protect children in its care.