The teen who was dragged by a train Monday evening in Princeton has had part of his arm amputated. Police say 15-year-old Alex Abell had thrown his shoes and backpack under the train, to the other side of the tracks, and when he tried to retrieve his backpack, the train hooked his arm and dragged him. His cousin, Cody Abell, rescued Alex from the train. Workers from the nearby train depot also helped Alex, who's expected to face a long hospital stay.