Josh Dueck's life changed dramatically in 2004, when he became paralyzed from the waist down in a skiing accident. But he not only kept the "freedom" he enjoys on the slopes, aboard a sit-ski, he excelled in competitions and pioneered backcountry skiing on the device. This past week he achieved another remarkable milestone: performing the first documented back flip in the snow on a sit-ski (fast-forward to the 2-minute mark to see the trick).
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