CHRIS KELLY staff Dominick Mastro, 9, gets a helping hand from Mary Kate Gahagan as athletes from Jackson's Challenger program enjoy an activity at Jackson Liberty High School. For more about the Challenger program, see story by staff writer Mark Rosman on page 24. CHRIS KELLY staff Dominick Mastro, 9, gets a helping hand from Mary Kate Gahagan as athletes from Jackson’s Challenger program enjoy an activity at Jackson Liberty High School. For more about the Challenger program, see story by staff writer Mark Rosman on page 24.