Khalid Sheikh Mohammed, who federal authorities accuse of proposing and overseeing the September 11, 2001 attacks on the U.S., appeared in a military courtroom today at the Guantanamo Bay Naval Base in Cuba. Mohammed said he would represent himself and, when told he could face the death penalty if convicted, "Yes, this is what I wish, to be a martyr for a long time. I will, God willing, have this, by you." Today was Mohammed's......