** FILE ** Britain's Queen Elizabeth II leaves Buckingham Palace in a horse drawn carriage for the Trooping The Colour parade, at the Horse Guards Parade in London, Saturday, June 15, 2013. (AP Photo/Sang Tan)

** FILE ** Britain's Queen Elizabeth II leaves Buckingham Palace in a horse drawn carriage for the Trooping The Colour parade, at the Horse Guards Parade in London, Saturday, June 15, 2013. (AP Photo/Sang Tan)