Under Siege 2: Dark Territory

Travis Dane is a brilliant technology expert who, with the help of a group of mercenaries, decides to hijack the Grand Continental, the most elegant passenger train in the United States. His goal is to turn one of the cars into a hub capable of controlling a deadly satellite, which he threatens to use to destroy the city of Washington. The only passenger not captured by the terrorists is Casey Ryback, a former marine who becomes the last hope for saving the three million people in danger.