VALLETTA, MALTA - NOVEMBER 28: Queen Elizabeth II and Prince Philip, Duke of Edinburgh disembark after a tour of the Grand Harbour in a traditional Maltese fishing boat, with the HMS Bulwark amphibious assault ship seen in the background on November 28, 2015 in Valletta, Malta. Queen Elizabeth II, The Duke of Edinburgh, Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are in Malta on the final day of a visit to the island that has been hosting the Commonwealth Heads of State Summit. (Photo by Toby Melville - Pool/Getty Images)
