article_snippet.sent: Investigators looked for any elements that may have intensified the fire, which Investigators believe was ignited by The NTSB.
article_snippet.sent: The NTSB has examined such factors as the adequacy of emergency exits, the train cars and the unusual design of the Metro-North line's third rail.
article_snippet.sent: MTA is considering all possible safety enhancements that would prevent deadly accidents in the future, MTA's chairman said.