Archery Federation rules are often considered normative, but large non-WA-affiliated archery organizations do exist with different rules. Competitive archery in the United States is governed by USA Archery and National Field Archery Association (NFAA), which also certifies instructors. Run archery is a shooting discipline connecting archery with running. Crossbow The International Crossbow Shooting Union (Internationale Armbrustschützen Union or IAU) was founded in Landshut, Germany on June 24, 1956, as the world governing body for crossbow target shooting. The IAU supervises World, Continental and International crossbow shooting championships in 3 disciplines; 30 m Match-crossbow, 10 m Match-crossbow and Field-crossbow shooting. IAU World Championships take place every two years with Continental Championships on intervening years. Other International and IAU-Cup events take place annually. World Crossbow Shooting Association (WCSA) organises competitions in 7 disciplines: Target, Target match play, Forest, Forest match play, 3D, Bench & prone target and Indoor target. Dart shooting sports Sport blowgun There are several competition styles of sport blowgun practised around the world. A standardization of competition style is based upon fukiya, and governed by the International Fukiyado Association. It is a 10-metre target shooting, using a standardized barrel caliber and length, and a standardized dart length and weight as outlined by IFA. There are two more styles, both based upon the Cherokee Annual Gathering Blowgun Competition. The Field Style competition is similar to the winter Biathlon, where the shooter runs from a starting line to a target lane, shoots and retrieves the darts, and continues to the next station. The course length varies from 400 to 800 m with from 9 to 16 targets at various heights and shooting distances. The final style is the Long Distance target shoot. The target is a circle of 24 cm diameter, and the firing line is 20 m away. Three darts are fired by each shooter, at least one of which must stick in the target. All successful shooters move to the next round, moving back 2 m each time. Confrontational shooting sports Confrontational shooting sports is a set of relatively new team sports using non-lethal ranged weapons that are safe enough to shoot at other people. Previously such games were not possible due to safety concerns since bows and guns are generally too lethal and dangerous for human targets, but the development of newer airgun and infrared technologies allowed for the development of safe confrontational disciplines. While initially only for