Queen Elizabeth II and the Duke of Edinburgh stand to attention during the National Anthem aboard HMCS St John&#39;s on June 29, 2010 in Halifax, Canada. The Queen and Duke of Edinburgh are on an eight day tour of Canada starting in Halifax and finishing in Toronto. The trip is to celebrate the centenary of the Canadian Navy and to mark Canada Day. The royal couple will make their way to New York where the Queen will address the UN and visit Ground Zero on July 6.