As NASA continues its internal review of the pending launch dates for the final two Space Shuttle missions in history, preparations are also continuing in earnest for the mission that everyone hopes will never be needed: the STS-335 flight to rescue the STS-134 crew in the event that Endeavour becomes disabled during the program's final [...] Read more... @

http://www.nasaspaceflight.com/2010/05/sts-335-nasa-planning-contingency...