Smoke was all Patrick Adams could see when he stepped onto the platform — smoke and people stumbling and coughing as they searched the underground rail station for exits. As Adams would later tell investigators for the National Transportation and Safety Board (NTSB), the scene was nothing short of “chaotic.” Adams is a rail supervisor for the Washington Metropolitan Area Transit Authority (WMATA). At 3:10 p.m. on Jan. 12, 2015, he was dispatched to the Washington Metro ...

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