How does a high school student from Massachussetts end up skiing on a glacier with the best athletes from the United States and Canada in the middle of the summer? The answer is a program, and a promise for other young skiers. Corey Stock, a 17-year-old racer who usually represents the Cambridge Sports Union, was nominated this year to be a member of the National Training Group (NTG), a program of the U.S. Ski Team....













