Britain's Prince William takes a shot with a hockey stick as his wife Catherine, the Duchess of Cambridge,watches during a visit to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories July 5, 2011. Prince William and his wife Catherine are on a royal tour of Canada from June 30 to July 8. REUTERS/Phil Noble

Britain's Prince William and his wife Catherine, the Duchess of Cambridge, react after the prince took a shot with a hockey stick and missed during a visit to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories July 5, 2011. Prince William and his wife Catherine are on a royal tour of Canada from June 30 to July 8. REUTERS/Phil Noble

Britain's Prince William takes a shot with a hockey stick on a goalie during a visit to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories with his wife Catherine, the Duchess of Cambridge July 5, 2011. Prince William and his wife Catherine are on a royal tour of Canada from June 30 to July 8. REUTERS/Andy Clark