FILE - In this Dec. 3, 1979, file photo, large-caliber bullet holes pierce the driver's window of the U.S. Navy bus that was ambushed by terrorists in Puerto Rico. Federal authorities reopened the case after the Sept. 11 terror attack on the U.S. revived Washington’s interest in suspected terrorists. Still, as the investigation dragged on, many people questioned whether it was worth the time and money, said Lou Eliopulos, director of NCIS’s Office of Forensic Support. (AP Photo/FC,File)