>> he works with youth boxers throughout the city of boston. >> it is a place where kids can learn self-confidence, respect, sportsmanship. it makes them a stronger person not just physically but mentally as well. >> how are you doing? >> respect for stanton's instruction runs high. lieutenant girard bail, head of the gang unit, has brought his son, zach, here to train. his first big fight is in two days. >> i'm not worried about the competition. >> speed, speed. >> there you go. >> get some water. >> good extension on that. >> the kids in the gym, not hanging in the corner in the back where they can get in trouble.