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We were talking earlier about the subway system which is, if not the busiest in the world, one of the busiest subway systems in the world. have those been completely shut down? >> caller: as far as we know, most of the train systems are still shut down. they are checking the tracks as a precaution that there are no cracks in the tracks. people are stuck at the train station right now. >> they are stuck in the train stations. what about the subway stations? have you heard reports either through t...