From left: Mustafa al Hawsawi, Ammar al Baluchi, Ramzi bin al Shibh, Walid Bin Attash, also spelled Waleed bin Attash,left, and Khalik Sheik Mohammad, pray at their arraignment Saturday, May 5, 2012. This sketch was reviewed and approved for release by a U.S. military security official. McClatchy Newspapers / JANET HAMLIN/POOL

David Nevin, the lead defense lawyer for the alleged 9/11 mastermind, talks to reporters at Guantanamo on May 6, 2012. He has a conflct and can't attend the next scheduled hearing of the five accused Sept. 11 plotters, prompting the judge to consider splitting up the cases. WALTER MICHOT / MIAMI HERALD STAFF