A New Federal Prosecutor, Who Will Be Serving All Of East Tennessee, Has Been Sworn In. Nancy Harr, A Bristol Native, Has Been Serving In The Position Of Interim Since The Retirement Of William Killian Last Year. Harr Said Her Priorities Are To Continue Combating Drug Trafficking And Now The Threat Of Cyber Crime. Harr Was A Former Prosecutor In Sullivan County And Has Been With The U.S. Attorney’s Office Since 1995.