You need to get your facts straight. The Convening Authority for the Marine prosecutions is a Marine Corps General Officer. The investigations were done by the Navy Criminal Investigation Services.
Lt. Gen. Francis H. Kearney III
http://www.wtop.com/?nid=116&sid=1310828
Gen. George W. Casey Jr
Lt. Gen. Peter Chiarelli
Maj. Gen. Eldon Bargewell
http://www.powerlineblog.com/archives/2006/07/014393.php
Col. Gregory Watt
http://www.google.com/search?hl=en&q=Col.+Gregory+Watt+usmc+investigations&btnG=Search