Expedition 14 was a mission to the International Space Station (ISS) that took place from December 2006 to June 2007. It involved a crew of six astronauts, including NASA astronauts Michael Lopez-Alegria and Sunita Williams. The mission focused on various scientific experiments and maintenance tasks aboard the ISS. During Expedition 14, the crew conducted research in fields such as biology, physics, and technology. They also prepared for the arrival of the European Space Agency's Automated Transfer Vehicle and worked on upgrades to the station's systems. The mission contributed to the ongoing development and sustainability of the ISS.