Troop 543 By Sarah White on behalf of Holston Valley UU Church, Gray, TN September 24, 2016 Holston Valley Unitarian Universalist Church sponsors Girl Scout Troop 543. The troop is a multi-level troop consisting of Daisies through Cadettes and serves the Tri Cities area. Address Turn Map Controls On / Off 136 Bob Jobe Road Gray, TN 37615 United States