WINTER PARK, Colo. -- Taking a deep breath, Wally Mozdzierz points his skis down the icy slope and leans forward. He hears the snow crunch and feels the contours change beneath him as he glides swiftly down the mountain, his guide following close behind.The run is exhilarating and adrenaline pumping -- common sensations for anyone on the slopes. But for Mozdzierz, it's different. He's totally blind."Slight right. Good. Good. Sharp left. Good. Good. Shallow right," the guide barks as Mozdzierz navigates the bumpy run at Winter Park, home to the National Sports Center for the Disabled.