MacCaulay
Banned
http://en.wikipedia.org/wiki/STS-400
I think this was pretty cool. You don't want to know how I found this. It's really creepy.
STS-400 was the Space Shuttle contingency support (Launch On Need) flight which would have been launched using Space Shuttle Endeavour if a major problem occurred on Space Shuttle Atlantis during STS-125, the final Hubble Space Telescope servicing mission (HST SM-4).[1][2][3][4]
Due to the much lower orbital inclination of the HST compared to the ISS, the shuttle crew would have been unable to use the International Space Station as a "safe haven" and NASA would not have been able to follow the usual plan of recovering the crew with another shuttle at a later date.[3] Instead, NASA developed a plan to conduct a shuttle-to-shuttle rescue mission, similar to proposed rescue missions for pre-ISS flights.[3][5][6] The rescue mission would have been launched only three days after call up and as early as seven days after the launch of STS-125 since the crew of Atlantis would only have about three weeks of consumables after launch.[2]
The mission was first rolled out in September 2008 to Launch Complex 39B two weeks after the STS-125 shuttle was rolled out to Launch Complex 39A. This created a rare scenario of two shuttles being on the launch pads at the same time.[3] In October 2008, however, STS-125 was subsequently delayed and rolled back to the VAB.
I think this was pretty cool. You don't want to know how I found this. It's really creepy.