Endeavour Rolled Out As Rescue Ship

stoolpigeon writes "The space shuttle Endeavour was rolled out to Launch Pad 39B yesterday. Space shuttle Atlantis is already at Launch Pad 39A, being made ready for the STS-125 mission to repair Hubble. We recently got a look at some behind-the-scenes photos for this mission. Endeavour is now in place to act as a rescue vehicle if there are any problems with Atlantis, once they are in space. This is the first time one shuttle has been prepared to act as a rescue vehicle for another. If all goes well for STS-125, Endeavour will move over to 39A to be used for STS-126."