Seven hours stuck on the NYC subway

"Suddenly the train stops, the conductor told us that snow on the third rail caused the train to lose power, they were going to try to fix that, but were unable to do. They were going to send a rescue train, but that got stuck, so we ended up stuck for about seven hours in a train with no power and unable to move and unable to get off."

Erin Durkin, a passenger on a New York City "A"-line subway train explains why she was stuck on the her train for seven hours and why it took so long to be rescued.