LONDON, UNITED KINGDOM - DECEMBER 16: Cadet Sergeant Bronwyn Jacobs (centre) stands with the Duke of Edinburgh as he is presented with a gift of a vase from Air Commodore Dawn McCafferty Commandant of the Air Cadet organisation (left) on December 16, 2015 in London, England. The Duke retired from the post of Air Commodore in Chief on the occasion of the Duchess of Cambridge becoming Honorary Air Commandant of the Air Cadets. (Photo by Stefan Rousseau /WPA Pool / Getty Images)