Investigators believe a massive fire that erupted on the Navy ship the USS Bonhomme Richard may have been intentionally set, and a Navy sailor has been identified as a possible suspect, two Defense officials confirmed Wednesday. The new details in the investigation of the July fire were reported earlier Wednesday by KGTV, an ABC affiliate in San Diego where the amphibious assault ship is based. Two Defense officials confirmed to NBC News that investigators now suspect arson. But the investigation is ongoing, and a determination has not been made as to whether the sailor is an actual suspect in the...