There are few quiet places in New York City. Perhaps there are none. A person can sit still in a movie theatre on Broadway or in a church-- say, Our Lady of Victory Church close to the New York Stock Exchange-- and still feel a vibration and rumble from beneath your feet as regular as a train, which in fact it is. The subways run under much of the city night and day. If you aren't used to the feeling of reoccurring rumbling noises you might think it is thunder, an earthquake, perhaps the detonation of some explosive.