S119-E-008431(25 March 2009) --- Astronaut Lee Archambault, STS-119 commander, closes the hatch on the middeck of Space Shuttle Discovery prior to undocking from the International Space Station to conclude almost 10 days of cooperative work onboard the shuttle and the station. Astronaut John Phillips, mission specialist, looks over a procedures checklist during the activity. Undocking of the two spacecraft occurred at 2:53 p.m. (CDT) on March 25, 2009.