McGruber writes: On Wednesday, authorities in the south Fulton County, Georgia town of Hapeville shut down a street for hours and used their bomb squad to search a home. According to the suspect's father, the bomb scare started after his 18-year-old son was arrested for trespassing, entering an abandoned warehouse and salvaging mercury switches, which can be used to detonate explosives. When police searched the teen's home on Virginia Avenue at Rainey Avenue in Hapeville, they said they found chemicals inside. "He's not building bombs. He does do a lot of experiments. A lot of them I don't fully understand, but I'm certain he's not making bombs," said the suspect's father, Allen Mason. Mason says chemistry is his son's hobby and he wants to be a chemical engineer. Mason also said police told him what they found is not illegal to own. One neighbor, who couldn't return home for hours, said he didn't feel the teen was a threat. "I don't see a problem with this, but you have to trust the authorities in they're doing what they think is best," said Curtis Ray. In February 2015, Hapeville authorities evacuated businesses and called out the bomb squad to investigate a pinhole camera that was part of a Georgia University Art Project.