Pentagon prosecutors allege that Guantanamo captive Majid Khan, left, recorded a martyr’s message and donned an explosive vest in an attempt to kill Pakistani President Pervez Musharraf, right, in a mosque in 2002. Khan, a Pakistani native who went to high school in the United States, went to the mosque but Musharraf didn't, prosecutors allege. A year later, Pakistani officials captured Khan and handed him over to the CIA.