Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
Judo in Canada the 2012 Olympics as part of a CTV series called "The Difference Makers", features Kelita Zupancic, who was training in Japan during the 2011 Tōhoku earthquake and tsunami disaster. The National Film Board has also produced two short documentaries about Judo. The first is "Judo Jinks" (1954), hosted by journalist Fred Davis, which includes a brief history of Judo, some demonstrations, and an interview with judoka Bernard Gauthier. The other documentary, "Judoka" (1965), features Doug Rogers and was filmed after he won silver In Tokyo. It shows his intensive training under the famous Masahiko Kimura (widely considered one of the