Tunisian paralympic champion Walid Ktila (C) poses with his family upon returning from the Rio 2016 Paralympic Games in Brazil, at Tunis-Carthage airport on September 21, 2016. Rio said farewell to the 2016 Paralympics Sunday in a closing ceremony showcasing Brazil's passion for music and celebrating what many consider to have been a surprisingly successful Games. / AFP PHOTO / FETHI BELAIDFETHI BELAID/AFP/Getty Images