'Constructing Relationships': NASA and the Russian Space Agency forged a relationship to develop the International Space Station. Rapidly other Nations came involved, with many more (including China) expressing interest in involvement. In-orbit construction began in 1998 and is the largest project undertaken of this scale and is scheduled to be completed in 2011. It has a planned lifespan of 17 years and is constantly manned. The ISS is a sign of man's constant presence in space and is one of our greatest achievements to date.