First, scientists must put down the stem cells they stole from unborn fetuses and devise a way to get the prisoners off of America's Planet and onto the moon. From there, we will take them to Mars while The Phantom Zone is being constructed by Halliburton. Once the cost overruns and congressional investigations into wrondoings by contractors have been swept under the rug, we will imprison the Gitmo prisoners in The Phantom Zone and send them hurling forever into the outer reaches of the endless void of space, where God can judge them at the End of Times.
There is no Plan B. See above.