A Southbury Girl Scout is working on her Gold Award, the highest achievement in the scouts program.  Pomperaug High School senior Grace Steenburgh installed a sign in the Southbury Police Station parking lot to create a "Safe Exchange Zone."  The well-known area under complete video surveillance can be a place for people to complete an online purchase, through Facebook tag sale, Craigslist, and other similar sites. It could also be a safe area for child custody issues.  Steenburgh hopes this helps Southbury residents better their education about the dangers surrounding certain exchanges and what to do to prevent that danger.