Space Shuttle Endeavour delivered the Expedition 5 crew during mission STS-111 which launched 5 June 2002. The fifth crew to live aboard the International Space Station was led by Russian Valery Korzun and joined by fellow Cosmonaut Sergei Treshchev and U.S. Astronaut Peggy A. Whitson, both flight engineers. While on board, Dr. Whitson was named NASA's first ISS Science Officer by NASA Administrator O'Keefe.