Most recently , Deputy Energy Secretary Daniel Poneman testified before the House Energy and Commerce Committee in March that the Department of Energy has taken `` several major actions ... to improve security '' since the Y-12 breach , including management changes and independent security reviews . Two peace activists have been convicted of trespassing , defacing a nuclear test site . The incident last year took place at the Y-12 site in Oak Ridge , Tennessee . They could face 30 years in prison , according to CNN affiliate WATE - TV .
Two peace activists have been convicted of trespassing , defacing a nuclear test site . The incident last year took place at the Y-12 site in Oak Ridge , Tennessee . They could face 30 years in prison , according to CNN affiliate WATE - TV .