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Brazilian police and military special forces are pictured outside the Mane Garrincha National Stadium, which will be one of the venues for the soccer competition of the 2016 Rio Olympic Games, during a presentation of the security scheme in Brasilia, Brazil July 22, 2016. REUTERS/Adriano Machado Brazilian police and military special forces stand outside the Mane Garrincha National Stadium which will be one of the venues for the soccer competition of the 2016 Rio Olympic Games, during a presentation of the security scheme in Brasilia, July 22, 2016. REUTERS/Adriano Machado People queue at a security check to enter the main press center as Brazilian military police soldiers provide security at the 2016 Rio Olympics Park in Rio de Janeiro, Brazil, July 21, 2016. REUTERS/Fabrizio Bensch