British paralympic gold medalists Grace Clough (L) and Pam Relph (C) are greeted by wellwishers after returning from the Rio 2016 Paralympic Games in Brazil, at Heathrow airport in London on September 20, 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. Eleven days of competition where China dominated the medals table, followed by Britain, ended earlier with the last few events, including marathons and wheelchair rugby. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images