Olympic Order in exceptional circumstances. Traditionally, the IOC bestows the Olympic Order upon the chief national organiser(s) at the closing ceremony of each respective Olympic Games. The insignia of the Olympic Order is in the form of a "collar" (or chain), in Gold, Silver or Bronze according to grade; the front of the chain depicts the five rings of the Olympic Movement, flanked on either side by "kotinos" emblem (olive wreath). A lapel badge, in the form of the five rings in Gold, Silver and Bronze according to grade, is presented to recipients to wear as appropriate. Nadia Comăneci is the only
Olympic Games ceremony I declare open the Rio Olympic Games, celebrating the XXXI Olympiad of the Modern Era". Next, the Olympic flag is carried horizontally (since the 1960 Summer Olympics) into the stadium and hoisted as the Olympic Hymn is played. The Olympic Charter states that the Olympic flag must "fly for the entire duration of the Olympic Games from a flagpole placed in a prominent position in the main stadium". At most games, the flag has been carried into the stadium by prominent athletes of the host nation, but in 2012, it was carried by an international group of athletes and non-athletes