Firefighters and rescue officials are seen through the window of the derailed "F" train as they help passengers escape through a subway tunnel emergency exit in the Woodside neighborhood located in the Queens borough of New York May 2, 2014. A New York City subway train carrying 1,000 riders derailed on Friday morning while traveling through a tunnel in the borough of Queens, injuring 19 people, city fire officials said. Fifteen people escaped with minor injuries while four more were transported to a hospital with potentially serious injuries, officials said. The incident, at 10:24 AM local time, involved a Manhattan-bound eight-car "F" line subway, they said. The cause of the derailment was not immediately known. [Photo/Agencies]