Susan "Sue" Marie Nattrass, (born November 5, 1950) is a Canadian trap shooter and medical researcher in osteoporosis. She was born in Medicine Hat, Alberta. Competing at an elite international level from the 1970s through the 2010s, Nattrass has had multiple appearances, in one or both of trap or double trap, at Olympic Games, Commonwealth Games, World Championships, and Pan American Games. Nattrass is a repeat World Champion and repeat medalist at the Commonwealth Games, World Championships, and Pan American Games. She was the flag bearer for Canada at the 2007 Pan American Games (and a gold medal winner) and the 2014 Commonwealth Games. As of the 2012 Olympics, Nattrass is one of only 122 athletes (and one of only 46 still active), all sports, to compete in at least six Olympic Games, appearing in 1976, '88, '92, 2000, '04 and '08. She won a gold medal at the World Championships in 1974, '75, '77, '78, '79, '81, and 2006. Beginnings She was introduced to trap shooting by her father Floyd Nattrass, who competed for Canada at the World Championships in 1958 and 1968 and at the Olympics in 1964. Nattrass said of her father: "While other kids would go to the lake for the summer, we always went to trap shoots. My dad started when I was 5; we'd go to shoots, and I did everything I could do be a part of it. Then when I turned 12, he taught me how to shoot." Olympics and Commonwealth Games In the 1976 Summer Olympics she became the first ever woman to participate in a shooting event at the Olympics, as shooting was open to both sexes until 1992. She won a silver medal at the 2001 world championships in Cairo, Egypt in the trap event. She finished 9th in the 2000 Summer Olympics and 6th in the 2004 Summer Olympics in women's trap shooting. At the 2006 Commonwealth Games Nattrass won three medals: two silver in women's double trap pairs and women's trap pairs and a bronze in women's trap. She won the Trap Shooting event at the World Championships in 1981 and 2006, twenty-five years apart. After the 1996 Summer Olympics, the International Shooting Union decided to discontinue the trap and skeet shooting events for women and instead allow women to compete in the double trap, where two clay saucers are thrown simultaneously. This is a difficult transition