Is a cell tower going up in your neighborhood? Wireless carriers are installing millions of them across the country. Many are ... asking: Are there legitimate health concerns? That question is keeping John Hiestand up at night. Outside his bedroom window he can see a new pole where Verizon will soon install a next-generation cell tower. It's called a small cell" or "distributed antenna system." The industry says they're safe. Many in Piedmont aren't convinced - including the Hiestands. However, according to federal law the city simply can't consider health concerns. It's outlined in a small section of the Telecommunications Act. If cities do consider health, cell companies can sue them. So, with few legal arguments to deny a tower, they're popping up outside bedroom windows and school campuses, despite objections from across the country. The International Association of Firefighters ... began opposing cell towers on fire stations, after firefighters complained of health problems. "These firefighters developed symptoms," says Dr. Gunnar Heuser. "The symptoms included problems with memory, problems with intermittent confusion, problems with weakness," Heuser said. Heuser says their brain scans suggest even low-level RF can cause cell damage. "We found abnormal brain function in all of the firefighters we examined," Heuser said. So, following lobbying by firefighters, [Piedmont officials] exempted fire stations from their bill, making them one place cell companies couldn't put a tower.