The alleged mutineers failed, but the Navy only needs evidence of a conspiracy to proceed with a court-martial. If convicted, Shaheed and Moss could each face 10 years in prison, lose all pay and allowances, be busted to the lowest rank and receive dishonorable discharges. Last month the Navy said it was investigating Seaman Danny Roberson, 25, of Marrero, La., also a Muslim. But there was no mention of Roberson last week; one NEWSWEEK source speculates that the third man might have become a witness for the prosecution.