 Complete the following phrase:  He competed at the 1960, 1964 and 1968 Winter Olympics, and all three times finished eleventh in the 20 kilometres. In 1968 he also won a silver medal with the Norwegian relay team. At the World Championships he won a gold medal in the 20 km event in 1966 in Garmisch-Partenkirchen, becoming the second biathlon world champion in Norways history. In addition, he won two gold medals in relay in 1966 and 