Knox County school officials say the board has approved changes in their policies and procedures regarding the new metal detectors. Frank Shelton, Public Relations Director, says every school in the district now has a least one metal detector and so far the process is running smoothly. Shelton says some changes include trained staff members (of the same sex) allowed to perform “pat downs” along with the school resource officer if needed, schools are staggering bus drop off times to keep metal detector lines short and Knox County Middle School recently became a “backpack-free” campus, helping them scan nearly 350 students into the building in just eight minutes. They hope other schools in the district will soon follow suit. Students brought letters home to their parents notifying them of change.