Las Vegas Sun

October 24, 2014

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In this Dec. 4, 2013, photo, a No. 7 New York City subway train arrives in the 5th Avenue-Bryant Park station in New York. Noise from screeching subway trains can be overwhelming, sometimes rising up out of the caverns trains operate in and into the buildings above.

Richard Drew / Associated Press

In this Dec. 4, 2013, photo, a No. 7 New York City subway train arrives in the 5th Avenue-Bryant Park station in New York. Noise from screeching subway trains can be overwhelming, sometimes rising up out of the caverns trains operate in and into the buildings above.