The boatswain’s mate, who grew up in Egypt, was awarded for his gutsy role in responding to a pirate attack on a commercial tanker in the Gulf of Aden.
It's the latest development in the U.S. military's struggle to bring to justice the man charged with planning the Sept. 11 attacks on the United States.
The decision puts back on track agreements that would have the three men plead guilty in exchange for being spared the possibility of the death penalty.