Self-proclaimed 9/11 mastermind Khalid Sheikh Mohammed and his four terrorist cohorts will appear in public Saturday for the first time in more than three years when the co-defendants are to be arraigned at a military tribunal at Guantanamo Bay. 9/11 Families Prepare for Gitmo ArraignmentOPINION: Obama Finally Gets Serious About Bringing KSM to JusticeOfficials: US Drone Strike Kills 8 Militants in Pakistan