In this photograph of a sketch by courtroom artist Janet Hamlin, reviewed by the U.S. Military, Khalid Sheikh Mohammed (C) and Waleed bin Attash, two of the Sept. 11 attacks co-conspirator suspects attend a court hearing inside a U.S. military war crimes court at Guantanamo Bay U.S. Naval Base in Cuba June 5, 2008. The accused al Qaeda mastermind of the Sept. 11 attacks, Khalid Sheikh Mohammed, stood in the U.S. military court on Thursday, sang a chant of praise to Allah and said he would welcome the death penalty. REUTERS/Janet Hamlin/Pool (CUBA)