Queen Elizabeth II riding sidesaddle on 'Burmese', a gift from the Canadian Royal Mounted Police, during the Trooping the Colour ceremony on Horse Guards Parade, London, England, Great Britain, 13 June 1981. The 1981 ceremony saw Marcus Serjeant fire six blank cartridges at the Queen as she turned down Horseguards Parade for the start of the Trooping the Colour ceremony. (Photo by Tim Graham Photo Library via Getty Images)
