 Complete the following phrase:  Raised by his father, Ohno began training full-time in 1996. He has been the face of short track in the United States since winning his medals at the 2002 Winter Olympics. At the age of 14, he became the youngest U.S. national champion in 1997 and was the reigning champion from 20012009, winning the title a total of 12 times. In December 1999, he became the youngest skater to win a World Cup event title, and became the first American to win a World Cup overall title in 2001, which he won again in 2003 and 2005. He won his first overall World Championship title at the 