Summer Olympic Games demand for tickets to all levels of each event, there was controversy when seats set aside for sponsors and National Delegations went unused in the early days. A system of reallocation was put in place so the empty seats were filled throughout the Games. Rio de Janeiro, Brazil hosted the 2016 Summer Olympics, becoming the third city in the Southern Hemisphere to host the Olympic Games after Melbourne, Australia, in 1956 and Sydney, Australia, in 2000, and the first South American city to host the Olympics. The preparation for these Games was overshadowed by controversies, including the instability of Brazil's
Olympic Games currently serving a life sentence for the bombing. The 2002 Winter Olympics in Salt Lake City, Utah, took place just five months after the September 11 attacks, which meant a higher level of security than ever before provided for an Olympic Games. The opening ceremonies of the Games featured symbols of the day's events. They included the flag that flew at Ground Zero, NYPD officer Daniel Rodríguez singing "God Bless America", and honour guards of NYPD and FDNY members. The events of that day have made security at the Olympic Games an increasing concern for Olympic planners. The Olympic Games