Gregory Reid "Tonto" Wiseman is an American astronaut, engineer, and naval aviator. Wiseman was selected in June 2009 as a member of the NASA Astronaut Group 20 and qualified as an astronaut in 2011. Wiseman took part in his first spaceflight as part of the crew of Expedition 40/41, which launched to the International Space Station on May 28, 2014, and returned on November 10, 2014. Before joining NASA, Wiseman was a Naval Aviator and test pilot. Wiseman was the Deputy Chief of the Astronaut Office from June 2017, working under Chief Astronaut Patrick Forrester. On December 20, 2020 he was promoted to Chief of the Astronaut Office at NASA.