Tim Hamilton knows a thing or two about second chances. He's had to switch gears and careers a few times in his professional life. He's been a dairy farmer, mustered cattle by plane in Australia and now Tim's just re-trained to be an aircraft maintenance engineer. By rebuilding his own life, he's been given a unique opportunity to rebuild an engine on an historic World War I triplane. The replica Fokker Dr 1 triplane was grounded when it suffered engine problems during an air show in 2007 and has not flown since.