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Expedition 56 backup crew members Anne McClain of NASA (left), Oleg Kononenko of Roscosmos (center) and David Saint-Jacques of the Canadian Space Agency arrive at the launch site at the Baikonur Cosmodrome in Kazakhstan May 19 for final training following a flight from their training base in Star City, Russia. They are the backups to Serena Aunon-Chancellor of NASA, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency who will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome for a six-month mission on the International Space Station.