The Chilocco school, which operated from the late 1800s until 1980, was one of several federally run boarding schools where the U.S. once sought to assimilate Native American children. The tribes say the substances the government plans to release are "potentially dangerous," though Homeland Security has insisted they're harmless. About 9,000 people from the farming town and surrounding communities, including Arkansas City, Kansas, just across the Oklahoma border, signed a petition seeking more information from Homeland Security. Homeland Security says the chemicals it wants to use are found in common household products such as sunscreen, cosmetics and laundry detergents. The Homeland Security project manager has said the chemicals won't pose harm to humans, animals or hundreds of acres of nearby cropland and pasture.

Source: Fox News December 16, 2017 16:00 UTC