selected in 1998. While awaiting his first flight, he worked on flight instrument upgrades for the space shuttle. He has also served as an astronaut support person for launch and landing operations at the Kennedy Space Center. A veteran of two space flights, Archambault completed his first space flight as the pilot on space shuttle Atlantis (June 2007), then as the spacecraft commander for space shuttle Discovery (March 2009). He logged a total of 27 days in space. Following his two missions in space, he concluded his duties at NASA as the Astronaut Office exploration branch chief before retiring from NASA in March 2013.