FILE - This Monday, Dec. 8, 2008 courtroom drawing by artist Janet Hamlin and reviewed by the U.S. military, shows Khalid Sheikh Mohammed, center, and co-defendant Walid Bin Attash, left, attending a pre-trial session at Guantanamo Bay Naval Base, Cuba. The man accused of being the main plotter in al-Qaeda's Sept. 11, 2001 attacks has agreed to plead guilty, The Defense Department said Wednesday. (AP Photo/Janet Hamlin, Pool, File)
FILE- Khalid Sheikh Mohammed, the alleged Sept. 11 mastermind, is seen shortly after his capture during a raid in Pakistan Saturday March 1, 2003 in this photo obtained by the Associated Press. The man accused of being the main plotter in al-Qaeda's Sept. 11, 2001 attacks has agreed to plead guilty, The Defense Department said Wednesday. (AP Photo, FILE)