 Vagner graduated basic spaceflight training in 2012.In January 2016 he was assigned to the crew of ISS Expedition 53/54 but was removed from the flight in September 2016 due to crew cutbacks on the Russian Orbital Segment on the ISS caused by delays with the launch of the Nauka laboratory module.Vagner was assigned to back up to Russian Flight Engineer Andrei Babkin onboard Soyuz MS-16, scheduled for launch in April 2020.