U.S. team Shauna Rohbock (front) and Valerie Fleming start during a practice at the Two-Women Bobsleigh World Championships in St. Moritz, January 30, 2007. The FIBT Bobsleigh and Skeleton World Championship 2007 takes place from January 22 to February 4 at the natural ice track of the Olympia Bob Run in the Swiss mountain resort. REUTERS/Arnd Wiegmann (SWITZERLAND)