The US Air Force said it found unsafe levels of possible cancer-causing chemicals at a Montana base. It found the chemicals in nuclear missile launch control centers at Malmstrom Air Force Base. A team of experts that carried out testing at Malmstrom Air Force Base in June discovered levels of polychlorinated biphenyls (PCBs) that were above federally recommended thresholds in two facilities at the site, Air Force Global Strike Command said in a statement on Monday. "Of the swipes, 279 returned non-detectable results," the Air Force said. None of the air samples of the launch control centers and launch control support building revealed any detectable levels for PCBs.

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Persons: Thomas Bussiere, Jackson Ligon, Jonathan Marinaccio, Daniel Brosam, F.E, — Organizations: US Air Force, Malmstrom Air Force Base, Service, Air Force Global Strike Command, Environmental Protection Agency, Air Force, Twentieth Air Force, Guardians, U.S . Air Force, 341st Missile, Air Force Base, AP, The Air Force, III Locations: Montana, Wall, Silicon, Great Falls, Mont, Wyoming, North Dakota, Warren, Minot, Malmstrom