Skiers and snowboarders head towards the slopes on Vail Mountain after fresh snow blanketed the area in this Feb. 26, 2003, photo in Vail, Colo. With competition heating up between ski resorts and airlines serving Colorado, Frontier Airlines and Vail Resorts have announced a partnership to give some fliers unlimited round-trip flights and skiing for one lump sum. (AP Photo/Peter M. Fredin)